Home / 20,687,273.61-28,548,437.49-11,990,490.77

Finding the Fourth Proportional to 20,687,273.61, 28,548,437.49 and 11,990,490.77

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Solution

The fourth proportional to 20,687,273.61, 28,548,437.49 and 11,990,490.77 is: 16,546,877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,273.61 : 28,548,437.49 = 11,990,490.77 : x
  2. Step 2: Convert to fraction form
    20,687,273.61/28,548,437.49 = 11,990,490.77/x
  3. Step 3: Cross multiply
    20,687,273.61x = 28,548,437.49 × 11,990,490.77
  4. Step 4: Simplify right side
    20,687,273.61x = 342,309,776,079,024.75
  5. Step 5: Solve for x
    x = 342,309,776,079,024.75/20,687,273.61
  6. Step 6: Final answer
    x = 16,546,877.20

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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.