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Finding the Fourth Proportional to 25,882.56, 35,718.72 and 15,281.28

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Solution

The fourth proportional to 25,882.56, 35,718.72 and 15,281.28 is: 21,088.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,882.56 : 35,718.72 = 15,281.28 : x
  2. Step 2: Convert to fraction form
    25,882.56/35,718.72 = 15,281.28/x
  3. Step 3: Cross multiply
    25,882.56x = 35,718.72 × 15,281.28
  4. Step 4: Simplify right side
    25,882.56x = 545,827,761.56
  5. Step 5: Solve for x
    x = 545,827,761.56/25,882.56
  6. Step 6: Final answer
    x = 21,088.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.