Home / 19,990.10-29,859.29-14,678.12

Finding the Fourth Proportional to 19,990.10, 29,859.29 and 14,678.12

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Solution

The fourth proportional to 19,990.10, 29,859.29 and 14,678.12 is: 21,924.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.10 : 29,859.29 = 14,678.12 : x
  2. Step 2: Convert to fraction form
    19,990.10/29,859.29 = 14,678.12/x
  3. Step 3: Cross multiply
    19,990.10x = 29,859.29 × 14,678.12
  4. Step 4: Simplify right side
    19,990.10x = 438,278,241.73
  5. Step 5: Solve for x
    x = 438,278,241.73/19,990.10
  6. Step 6: Final answer
    x = 21,924.76

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.