Home / 12,470.20-18,707.90-4,152.80

Finding the Fourth Proportional to 12,470.20, 18,707.90 and 4,152.80

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Solution

The fourth proportional to 12,470.20, 18,707.90 and 4,152.80 is: 6,230.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.20 : 18,707.90 = 4,152.80 : x
  2. Step 2: Convert to fraction form
    12,470.20/18,707.90 = 4,152.80/x
  3. Step 3: Cross multiply
    12,470.20x = 18,707.90 × 4,152.80
  4. Step 4: Simplify right side
    12,470.20x = 77,690,167.12
  5. Step 5: Solve for x
    x = 77,690,167.12/12,470.20
  6. Step 6: Final answer
    x = 6,230.07

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1.5x scale

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.