Home / 12,459,467.20-18,689,200.80-8,176,446.40

Finding the Fourth Proportional to 12,459,467.20, 18,689,200.80 and 8,176,446.40

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Solution

The fourth proportional to 12,459,467.20, 18,689,200.80 and 8,176,446.40 is: 12,264,669.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459,467.20 : 18,689,200.80 = 8,176,446.40 : x
  2. Step 2: Convert to fraction form
    12,459,467.20/18,689,200.80 = 8,176,446.40/x
  3. Step 3: Cross multiply
    12,459,467.20x = 18,689,200.80 × 8,176,446.40
  4. Step 4: Simplify right side
    12,459,467.20x = 152,811,248,600,037.12
  5. Step 5: Solve for x
    x = 152,811,248,600,037.12/12,459,467.20
  6. Step 6: Final answer
    x = 12,264,669.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.