Home / 31,356.45-47,034.65-13,572.54

Finding the Fourth Proportional to 31,356.45, 47,034.65 and 13,572.54

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Solution

The fourth proportional to 31,356.45, 47,034.65 and 13,572.54 is: 20,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,356.45 : 47,034.65 = 13,572.54 : x
  2. Step 2: Convert to fraction form
    31,356.45/47,034.65 = 13,572.54/x
  3. Step 3: Cross multiply
    31,356.45x = 47,034.65 × 13,572.54
  4. Step 4: Simplify right side
    31,356.45x = 638,379,600.65
  5. Step 5: Solve for x
    x = 638,379,600.65/31,356.45
  6. Step 6: Final answer
    x = 20,358.80

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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.