Home / 15,047,970.50-20,766,321.32-8,172,501.78

Finding the Fourth Proportional to 15,047,970.50, 20,766,321.32 and 8,172,501.78

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Solution

The fourth proportional to 15,047,970.50, 20,766,321.32 and 8,172,501.78 is: 11,278,118.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,047,970.50 : 20,766,321.32 = 8,172,501.78 : x
  2. Step 2: Convert to fraction form
    15,047,970.50/20,766,321.32 = 8,172,501.78/x
  3. Step 3: Cross multiply
    15,047,970.50x = 20,766,321.32 × 8,172,501.78
  4. Step 4: Simplify right side
    15,047,970.50x = 169,712,797,951,751.97
  5. Step 5: Solve for x
    x = 169,712,797,951,751.97/15,047,970.50
  6. Step 6: Final answer
    x = 11,278,118.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.