Home / 31,470.04-47,205.19-12,750.43

Finding the Fourth Proportional to 31,470.04, 47,205.19 and 12,750.43

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Solution

The fourth proportional to 31,470.04, 47,205.19 and 12,750.43 is: 19,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,470.04 : 47,205.19 = 12,750.43 : x
  2. Step 2: Convert to fraction form
    31,470.04/47,205.19 = 12,750.43/x
  3. Step 3: Cross multiply
    31,470.04x = 47,205.19 × 12,750.43
  4. Step 4: Simplify right side
    31,470.04x = 601,886,470.73
  5. Step 5: Solve for x
    x = 601,886,470.73/31,470.04
  6. Step 6: Final answer
    x = 19,125.70

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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.