Home / 25,781.49-38,683.58-13,921.61

Finding the Fourth Proportional to 25,781.49, 38,683.58 and 13,921.61

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Solution

The fourth proportional to 25,781.49, 38,683.58 and 13,921.61 is: 20,888.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,781.49 : 38,683.58 = 13,921.61 : x
  2. Step 2: Convert to fraction form
    25,781.49/38,683.58 = 13,921.61/x
  3. Step 3: Cross multiply
    25,781.49x = 38,683.58 × 13,921.61
  4. Step 4: Simplify right side
    25,781.49x = 538,537,451.14
  5. Step 5: Solve for x
    x = 538,537,451.14/25,781.49
  6. Step 6: Final answer
    x = 20,888.53

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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.