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Finding the Fourth Proportional to 29,990.61, 45,013.22 and 15,962.42

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Solution

The fourth proportional to 29,990.61, 45,013.22 and 15,962.42 is: 23,958.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,990.61 : 45,013.22 = 15,962.42 : x
  2. Step 2: Convert to fraction form
    29,990.61/45,013.22 = 15,962.42/x
  3. Step 3: Cross multiply
    29,990.61x = 45,013.22 × 15,962.42
  4. Step 4: Simplify right side
    29,990.61x = 718,519,618.31
  5. Step 5: Solve for x
    x = 718,519,618.31/29,990.61
  6. Step 6: Final answer
    x = 23,958.15

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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.