Home / 31,508.61-47,282.62-12,788.64

Finding the Fourth Proportional to 31,508.61, 47,282.62 and 12,788.64

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Solution

The fourth proportional to 31,508.61, 47,282.62 and 12,788.64 is: 19,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,508.61 : 47,282.62 = 12,788.64 : x
  2. Step 2: Convert to fraction form
    31,508.61/47,282.62 = 12,788.64/x
  3. Step 3: Cross multiply
    31,508.61x = 47,282.62 × 12,788.64
  4. Step 4: Simplify right side
    31,508.61x = 604,680,405.44
  5. Step 5: Solve for x
    x = 604,680,405.44/31,508.61
  6. Step 6: Final answer
    x = 19,190.96

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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.