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Finding the Fourth Proportional to 32,484.78, 48,693.69 and 12,488.85

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Solution

The fourth proportional to 32,484.78, 48,693.69 and 12,488.85 is: 18,720.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,484.78 : 48,693.69 = 12,488.85 : x
  2. Step 2: Convert to fraction form
    32,484.78/48,693.69 = 12,488.85/x
  3. Step 3: Cross multiply
    32,484.78x = 48,693.69 × 12,488.85
  4. Step 4: Simplify right side
    32,484.78x = 608,128,190.36
  5. Step 5: Solve for x
    x = 608,128,190.36/32,484.78
  6. Step 6: Final answer
    x = 18,720.40

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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.