Home / 21,402.84-29,531.16-13,442.16

Finding the Fourth Proportional to 21,402.84, 29,531.16 and 13,442.16

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Solution

The fourth proportional to 21,402.84, 29,531.16 and 13,442.16 is: 18,547.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,402.84 : 29,531.16 = 13,442.16 : x
  2. Step 2: Convert to fraction form
    21,402.84/29,531.16 = 13,442.16/x
  3. Step 3: Cross multiply
    21,402.84x = 29,531.16 × 13,442.16
  4. Step 4: Simplify right side
    21,402.84x = 396,962,577.71
  5. Step 5: Solve for x
    x = 396,962,577.71/21,402.84
  6. Step 6: Final answer
    x = 18,547.19

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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.