Home / 13,290,689.40-19,930,129.20-5,200,976.40

Finding the Fourth Proportional to 13,290,689.40, 19,930,129.20 and 5,200,976.40

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Solution

The fourth proportional to 13,290,689.40, 19,930,129.20 and 5,200,976.40 is: 7,799,153.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290,689.40 : 19,930,129.20 = 5,200,976.40 : x
  2. Step 2: Convert to fraction form
    13,290,689.40/19,930,129.20 = 5,200,976.40/x
  3. Step 3: Cross multiply
    13,290,689.40x = 19,930,129.20 × 5,200,976.40
  4. Step 4: Simplify right side
    13,290,689.40x = 103,656,131,618,150.89
  5. Step 5: Solve for x
    x = 103,656,131,618,150.89/13,290,689.40
  6. Step 6: Final answer
    x = 7,799,153.87

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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.