Home / 21,301.62-29,397.05-11,870.79

Finding the Fourth Proportional to 21,301.62, 29,397.05 and 11,870.79

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Solution

The fourth proportional to 21,301.62, 29,397.05 and 11,870.79 is: 16,382.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.62 : 29,397.05 = 11,870.79 : x
  2. Step 2: Convert to fraction form
    21,301.62/29,397.05 = 11,870.79/x
  3. Step 3: Cross multiply
    21,301.62x = 29,397.05 × 11,870.79
  4. Step 4: Simplify right side
    21,301.62x = 348,966,207.17
  5. Step 5: Solve for x
    x = 348,966,207.17/21,301.62
  6. Step 6: Final answer
    x = 16,382.14

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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.