Home / 18,722,434.80-28,083,652.20-15,321,212.40

Finding the Fourth Proportional to 18,722,434.80, 28,083,652.20 and 15,321,212.40

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Solution

The fourth proportional to 18,722,434.80, 28,083,652.20 and 15,321,212.40 is: 22,981,818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,434.80 : 28,083,652.20 = 15,321,212.40 : x
  2. Step 2: Convert to fraction form
    18,722,434.80/28,083,652.20 = 15,321,212.40/x
  3. Step 3: Cross multiply
    18,722,434.80x = 28,083,652.20 × 15,321,212.40
  4. Step 4: Simplify right side
    18,722,434.80x = 430,275,600,323,927.25
  5. Step 5: Solve for x
    x = 430,275,600,323,927.25/18,722,434.80
  6. Step 6: Final answer
    x = 22,981,818.60

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Similar ratio
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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.