Home / 18,722,409.20-28,083,613.80-15,699,100.40

Finding the Fourth Proportional to 18,722,409.20, 28,083,613.80 and 15,699,100.40

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Solution

The fourth proportional to 18,722,409.20, 28,083,613.80 and 15,699,100.40 is: 23,548,650.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,409.20 : 28,083,613.80 = 15,699,100.40 : x
  2. Step 2: Convert to fraction form
    18,722,409.20/28,083,613.80 = 15,699,100.40/x
  3. Step 3: Cross multiply
    18,722,409.20x = 28,083,613.80 × 15,699,100.40
  4. Step 4: Simplify right side
    18,722,409.20x = 440,887,472,641,025.56
  5. Step 5: Solve for x
    x = 440,887,472,641,025.56/18,722,409.20
  6. Step 6: Final answer
    x = 23,548,650.60

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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.