Home / 25,635.42-38,449.29-21,280.86

Finding the Fourth Proportional to 25,635.42, 38,449.29 and 21,280.86

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Solution

The fourth proportional to 25,635.42, 38,449.29 and 21,280.86 is: 31,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,635.42 : 38,449.29 = 21,280.86 : x
  2. Step 2: Convert to fraction form
    25,635.42/38,449.29 = 21,280.86/x
  3. Step 3: Cross multiply
    25,635.42x = 38,449.29 × 21,280.86
  4. Step 4: Simplify right side
    25,635.42x = 818,233,957.59
  5. Step 5: Solve for x
    x = 818,233,957.59/25,635.42
  6. Step 6: Final answer
    x = 31,918.10

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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.