Home / 20,148.60-30,237.30-8,470.20

Finding the Fourth Proportional to 20,148.60, 30,237.30 and 8,470.20

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Solution

The fourth proportional to 20,148.60, 30,237.30 and 8,470.20 is: 12,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.60 : 30,237.30 = 8,470.20 : x
  2. Step 2: Convert to fraction form
    20,148.60/30,237.30 = 8,470.20/x
  3. Step 3: Cross multiply
    20,148.60x = 30,237.30 × 8,470.20
  4. Step 4: Simplify right side
    20,148.60x = 256,115,978.46
  5. Step 5: Solve for x
    x = 256,115,978.46/20,148.60
  6. Step 6: Final answer
    x = 12,711.35

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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.