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Finding the Fourth Proportional to 40,484.96, 60,729.30 and 12,403

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Solution

The fourth proportional to 40,484.96, 60,729.30 and 12,403 is: 18,605.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,484.96 : 60,729.30 = 12,403 : x
  2. Step 2: Convert to fraction form
    40,484.96/60,729.30 = 12,403/x
  3. Step 3: Cross multiply
    40,484.96x = 60,729.30 × 12,403
  4. Step 4: Simplify right side
    40,484.96x = 753,225,507.90
  5. Step 5: Solve for x
    x = 753,225,507.90/40,484.96
  6. Step 6: Final answer
    x = 18,605.07

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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.