Home / 31,445.82-47,171.70-10,386

Finding the Fourth Proportional to 31,445.82, 47,171.70 and 10,386

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Solution

The fourth proportional to 31,445.82, 47,171.70 and 10,386 is: 15,579.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,445.82 : 47,171.70 = 10,386 : x
  2. Step 2: Convert to fraction form
    31,445.82/47,171.70 = 10,386/x
  3. Step 3: Cross multiply
    31,445.82x = 47,171.70 × 10,386
  4. Step 4: Simplify right side
    31,445.82x = 489,925,276.20
  5. Step 5: Solve for x
    x = 489,925,276.20/31,445.82
  6. Step 6: Final answer
    x = 15,579.98

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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.