Home / 20,687,267.32-28,548,428.80-11,990,484.47

Finding the Fourth Proportional to 20,687,267.32, 28,548,428.80 and 11,990,484.47

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Solution

The fourth proportional to 20,687,267.32, 28,548,428.80 and 11,990,484.47 is: 16,546,868.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,267.32 : 28,548,428.80 = 11,990,484.47 : x
  2. Step 2: Convert to fraction form
    20,687,267.32/28,548,428.80 = 11,990,484.47/x
  3. Step 3: Cross multiply
    20,687,267.32x = 28,548,428.80 × 11,990,484.47
  4. Step 4: Simplify right side
    20,687,267.32x = 342,309,492,250,024.38
  5. Step 5: Solve for x
    x = 342,309,492,250,024.38/20,687,267.32
  6. Step 6: Final answer
    x = 16,546,868.51

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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.