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Finding the Fourth Proportional to 8,909.90, 13,366.82 and 7,331.01

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Solution

The fourth proportional to 8,909.90, 13,366.82 and 7,331.01 is: 10,998.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.90 : 13,366.82 = 7,331.01 : x
  2. Step 2: Convert to fraction form
    8,909.90/13,366.82 = 7,331.01/x
  3. Step 3: Cross multiply
    8,909.90x = 13,366.82 × 7,331.01
  4. Step 4: Simplify right side
    8,909.90x = 97,992,259.29
  5. Step 5: Solve for x
    x = 97,992,259.29/8,909.90
  6. Step 6: Final answer
    x = 10,998.13

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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.