Home / 18,722,437.20-28,083,655.80-15,699,128.40

Finding the Fourth Proportional to 18,722,437.20, 28,083,655.80 and 15,699,128.40

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Solution

The fourth proportional to 18,722,437.20, 28,083,655.80 and 15,699,128.40 is: 23,548,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,437.20 : 28,083,655.80 = 15,699,128.40 : x
  2. Step 2: Convert to fraction form
    18,722,437.20/28,083,655.80 = 15,699,128.40/x
  3. Step 3: Cross multiply
    18,722,437.20x = 28,083,655.80 × 15,699,128.40
  4. Step 4: Simplify right side
    18,722,437.20x = 440,888,918,345,604.75
  5. Step 5: Solve for x
    x = 440,888,918,345,604.75/18,722,437.20
  6. Step 6: Final answer
    x = 23,548,692.60

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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.