Home / 14,678.40-20,251.28-8,304.10

Finding the Fourth Proportional to 14,678.40, 20,251.28 and 8,304.10

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Solution

The fourth proportional to 14,678.40, 20,251.28 and 8,304.10 is: 11,456.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,678.40 : 20,251.28 = 8,304.10 : x
  2. Step 2: Convert to fraction form
    14,678.40/20,251.28 = 8,304.10/x
  3. Step 3: Cross multiply
    14,678.40x = 20,251.28 × 8,304.10
  4. Step 4: Simplify right side
    14,678.40x = 168,168,654.25
  5. Step 5: Solve for x
    x = 168,168,654.25/14,678.40
  6. Step 6: Final answer
    x = 11,456.88

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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.