Home / 18,864,139.80-28,324,203.30-13,209,432.60

Finding the Fourth Proportional to 18,864,139.80, 28,324,203.30 and 13,209,432.60

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Solution

The fourth proportional to 18,864,139.80, 28,324,203.30 and 13,209,432.60 is: 19,833,751.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864,139.80 : 28,324,203.30 = 13,209,432.60 : x
  2. Step 2: Convert to fraction form
    18,864,139.80/28,324,203.30 = 13,209,432.60/x
  3. Step 3: Cross multiply
    18,864,139.80x = 28,324,203.30 × 13,209,432.60
  4. Step 4: Simplify right side
    18,864,139.80x = 374,146,654,440,047.56
  5. Step 5: Solve for x
    x = 374,146,654,440,047.56/18,864,139.80
  6. Step 6: Final answer
    x = 19,833,751.15

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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.