Home / 21,101.14-29,132.21-13,154.13

Finding the Fourth Proportional to 21,101.14, 29,132.21 and 13,154.13

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Solution

The fourth proportional to 21,101.14, 29,132.21 and 13,154.13 is: 18,160.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.14 : 29,132.21 = 13,154.13 : x
  2. Step 2: Convert to fraction form
    21,101.14/29,132.21 = 13,154.13/x
  3. Step 3: Cross multiply
    21,101.14x = 29,132.21 × 13,154.13
  4. Step 4: Simplify right side
    21,101.14x = 383,208,877.53
  5. Step 5: Solve for x
    x = 383,208,877.53/21,101.14
  6. Step 6: Final answer
    x = 18,160.58

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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.