Home / 20,689,590.51-28,547,266.59-11,987,233.20

Finding the Fourth Proportional to 20,689,590.51, 28,547,266.59 and 11,987,233.20

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Solution

The fourth proportional to 20,689,590.51, 28,547,266.59 and 11,987,233.20 is: 16,539,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,590.51 : 28,547,266.59 = 11,987,233.20 : x
  2. Step 2: Convert to fraction form
    20,689,590.51/28,547,266.59 = 11,987,233.20/x
  3. Step 3: Cross multiply
    20,689,590.51x = 28,547,266.59 × 11,987,233.20
  4. Step 4: Simplify right side
    20,689,590.51x = 342,202,741,836,898.75
  5. Step 5: Solve for x
    x = 342,202,741,836,898.75/20,689,590.51
  6. Step 6: Final answer
    x = 16,539,850.88

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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.