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Finding the Fourth Proportional to 21,909.74, 32,864.88 and 6,327.50

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Solution

The fourth proportional to 21,909.74, 32,864.88 and 6,327.50 is: 9,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.74 : 32,864.88 = 6,327.50 : x
  2. Step 2: Convert to fraction form
    21,909.74/32,864.88 = 6,327.50/x
  3. Step 3: Cross multiply
    21,909.74x = 32,864.88 × 6,327.50
  4. Step 4: Simplify right side
    21,909.74x = 207,952,528.20
  5. Step 5: Solve for x
    x = 207,952,528.20/21,909.74
  6. Step 6: Final answer
    x = 9,491.33

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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.