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Finding the Fourth Proportional to 25,287.40, 37,914.90 and 10,502.20

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Solution

The fourth proportional to 25,287.40, 37,914.90 and 10,502.20 is: 15,746.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,287.40 : 37,914.90 = 10,502.20 : x
  2. Step 2: Convert to fraction form
    25,287.40/37,914.90 = 10,502.20/x
  3. Step 3: Cross multiply
    25,287.40x = 37,914.90 × 10,502.20
  4. Step 4: Simplify right side
    25,287.40x = 398,189,862.78
  5. Step 5: Solve for x
    x = 398,189,862.78/25,287.40
  6. Step 6: Final answer
    x = 15,746.57

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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.