Home / 21,352.28-29,454.30-14,988.38

Finding the Fourth Proportional to 21,352.28, 29,454.30 and 14,988.38

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Solution

The fourth proportional to 21,352.28, 29,454.30 and 14,988.38 is: 20,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,352.28 : 29,454.30 = 14,988.38 : x
  2. Step 2: Convert to fraction form
    21,352.28/29,454.30 = 14,988.38/x
  3. Step 3: Cross multiply
    21,352.28x = 29,454.30 × 14,988.38
  4. Step 4: Simplify right side
    21,352.28x = 441,472,241.03
  5. Step 5: Solve for x
    x = 441,472,241.03/21,352.28
  6. Step 6: Final answer
    x = 20,675.65

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Half scale
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Double scale
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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.