Home / 12,385.20-18,577.80-4,592.40

Finding the Fourth Proportional to 12,385.20, 18,577.80 and 4,592.40

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Solution

The fourth proportional to 12,385.20, 18,577.80 and 4,592.40 is: 6,888.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.20 : 18,577.80 = 4,592.40 : x
  2. Step 2: Convert to fraction form
    12,385.20/18,577.80 = 4,592.40/x
  3. Step 3: Cross multiply
    12,385.20x = 18,577.80 × 4,592.40
  4. Step 4: Simplify right side
    12,385.20x = 85,316,688.72
  5. Step 5: Solve for x
    x = 85,316,688.72/12,385.20
  6. Step 6: Final answer
    x = 6,888.60

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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.