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Finding the Fourth Proportional to 15,957.40, 23,892.90 and 12,501.40

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Solution

The fourth proportional to 15,957.40, 23,892.90 and 12,501.40 is: 18,718.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.40 : 23,892.90 = 12,501.40 : x
  2. Step 2: Convert to fraction form
    15,957.40/23,892.90 = 12,501.40/x
  3. Step 3: Cross multiply
    15,957.40x = 23,892.90 × 12,501.40
  4. Step 4: Simplify right side
    15,957.40x = 298,694,700.06
  5. Step 5: Solve for x
    x = 298,694,700.06/15,957.40
  6. Step 6: Final answer
    x = 18,718.26

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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.