Home / 31,870.30-47,805.43-15,179.74

Finding the Fourth Proportional to 31,870.30, 47,805.43 and 15,179.74

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Solution

The fourth proportional to 31,870.30, 47,805.43 and 15,179.74 is: 22,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,870.30 : 47,805.43 = 15,179.74 : x
  2. Step 2: Convert to fraction form
    31,870.30/47,805.43 = 15,179.74/x
  3. Step 3: Cross multiply
    31,870.30x = 47,805.43 × 15,179.74
  4. Step 4: Simplify right side
    31,870.30x = 725,673,997.99
  5. Step 5: Solve for x
    x = 725,673,997.99/31,870.30
  6. Step 6: Final answer
    x = 22,769.60

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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.