Home / 21,097.14-29,126.69-13,150.13

Finding the Fourth Proportional to 21,097.14, 29,126.69 and 13,150.13

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Solution

The fourth proportional to 21,097.14, 29,126.69 and 13,150.13 is: 18,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,097.14 : 29,126.69 = 13,150.13 : x
  2. Step 2: Convert to fraction form
    21,097.14/29,126.69 = 13,150.13/x
  3. Step 3: Cross multiply
    21,097.14x = 29,126.69 × 13,150.13
  4. Step 4: Simplify right side
    21,097.14x = 383,019,761.74
  5. Step 5: Solve for x
    x = 383,019,761.74/21,097.14
  6. Step 6: Final answer
    x = 18,155.05

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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.