Home / 13,654.72-20,426.28-9,705.70

Finding the Fourth Proportional to 13,654.72, 20,426.28 and 9,705.70

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Solution

The fourth proportional to 13,654.72, 20,426.28 and 9,705.70 is: 14,518.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.72 : 20,426.28 = 9,705.70 : x
  2. Step 2: Convert to fraction form
    13,654.72/20,426.28 = 9,705.70/x
  3. Step 3: Cross multiply
    13,654.72x = 20,426.28 × 9,705.70
  4. Step 4: Simplify right side
    13,654.72x = 198,251,345.80
  5. Step 5: Solve for x
    x = 198,251,345.80/13,654.72
  6. Step 6: Final answer
    x = 14,518.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.