Home / 20,687,271.32-28,548,434.31-11,990,488.46

Finding the Fourth Proportional to 20,687,271.32, 28,548,434.31 and 11,990,488.46

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Solution

The fourth proportional to 20,687,271.32, 28,548,434.31 and 11,990,488.46 is: 16,546,874.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,271.32 : 28,548,434.31 = 11,990,488.46 : x
  2. Step 2: Convert to fraction form
    20,687,271.32/28,548,434.31 = 11,990,488.46/x
  3. Step 3: Cross multiply
    20,687,271.32x = 28,548,434.31 × 11,990,488.46
  4. Step 4: Simplify right side
    20,687,271.32x = 342,309,672,078,391.38
  5. Step 5: Solve for x
    x = 342,309,672,078,391.38/20,687,271.32
  6. Step 6: Final answer
    x = 16,546,874.00

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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.