Home / 21,304.68-29,398.30-12,355.17

Finding the Fourth Proportional to 21,304.68, 29,398.30 and 12,355.17

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Solution

The fourth proportional to 21,304.68, 29,398.30 and 12,355.17 is: 17,048.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.68 : 29,398.30 = 12,355.17 : x
  2. Step 2: Convert to fraction form
    21,304.68/29,398.30 = 12,355.17/x
  3. Step 3: Cross multiply
    21,304.68x = 29,398.30 × 12,355.17
  4. Step 4: Simplify right side
    21,304.68x = 363,220,994.21
  5. Step 5: Solve for x
    x = 363,220,994.21/21,304.68
  6. Step 6: Final answer
    x = 17,048.88

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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.