Home / 20,687,302.10-28,548,476.67-11,990,519.20

Finding the Fourth Proportional to 20,687,302.10, 28,548,476.67 and 11,990,519.20

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Solution

The fourth proportional to 20,687,302.10, 28,548,476.67 and 11,990,519.20 is: 16,546,916.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687,302.10 : 28,548,476.67 = 11,990,519.20 : x
  2. Step 2: Convert to fraction form
    20,687,302.10/28,548,476.67 = 11,990,519.20/x
  3. Step 3: Cross multiply
    20,687,302.10x = 28,548,476.67 × 11,990,519.20
  4. Step 4: Simplify right side
    20,687,302.10x = 342,311,057,642,387.06
  5. Step 5: Solve for x
    x = 342,311,057,642,387.06/20,687,302.10
  6. Step 6: Final answer
    x = 16,546,916.36

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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.