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Finding the Fourth Proportional to 10,656.96, 15,988.88 and 6,966.39

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Solution

The fourth proportional to 10,656.96, 15,988.88 and 6,966.39 is: 10,451.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.96 : 15,988.88 = 6,966.39 : x
  2. Step 2: Convert to fraction form
    10,656.96/15,988.88 = 6,966.39/x
  3. Step 3: Cross multiply
    10,656.96x = 15,988.88 × 6,966.39
  4. Step 4: Simplify right side
    10,656.96x = 111,384,773.74
  5. Step 5: Solve for x
    x = 111,384,773.74/10,656.96
  6. Step 6: Final answer
    x = 10,451.83

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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.