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Finding the Fourth Proportional to 21,776.88, 32,665.80 and 12,349.52

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Solution

The fourth proportional to 21,776.88, 32,665.80 and 12,349.52 is: 18,524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.88 : 32,665.80 = 12,349.52 : x
  2. Step 2: Convert to fraction form
    21,776.88/32,665.80 = 12,349.52/x
  3. Step 3: Cross multiply
    21,776.88x = 32,665.80 × 12,349.52
  4. Step 4: Simplify right side
    21,776.88x = 403,406,950.42
  5. Step 5: Solve for x
    x = 403,406,950.42/21,776.88
  6. Step 6: Final answer
    x = 18,524.55

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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.