Home / 10,446.40-15,669.60-8,113.60

Finding the Fourth Proportional to 10,446.40, 15,669.60 and 8,113.60

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Solution

The fourth proportional to 10,446.40, 15,669.60 and 8,113.60 is: 12,170.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,446.40 : 15,669.60 = 8,113.60 : x
  2. Step 2: Convert to fraction form
    10,446.40/15,669.60 = 8,113.60/x
  3. Step 3: Cross multiply
    10,446.40x = 15,669.60 × 8,113.60
  4. Step 4: Simplify right side
    10,446.40x = 127,136,866.56
  5. Step 5: Solve for x
    x = 127,136,866.56/10,446.40
  6. Step 6: Final answer
    x = 12,170.40

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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.