Home / 31,345.19-47,029.78-18,874.13

Finding the Fourth Proportional to 31,345.19, 47,029.78 and 18,874.13

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Solution

The fourth proportional to 31,345.19, 47,029.78 and 18,874.13 is: 28,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,345.19 : 47,029.78 = 18,874.13 : x
  2. Step 2: Convert to fraction form
    31,345.19/47,029.78 = 18,874.13/x
  3. Step 3: Cross multiply
    31,345.19x = 47,029.78 × 18,874.13
  4. Step 4: Simplify right side
    31,345.19x = 887,645,970.04
  5. Step 5: Solve for x
    x = 887,645,970.04/31,345.19
  6. Step 6: Final answer
    x = 28,318.41

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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.