Home / 20,406,689.43-28,161,231.35-11,239,332.18

Finding the Fourth Proportional to 20,406,689.43, 28,161,231.35 and 11,239,332.18

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Solution

The fourth proportional to 20,406,689.43, 28,161,231.35 and 11,239,332.18 is: 15,510,278.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406,689.43 : 28,161,231.35 = 11,239,332.18 : x
  2. Step 2: Convert to fraction form
    20,406,689.43/28,161,231.35 = 11,239,332.18/x
  3. Step 3: Cross multiply
    20,406,689.43x = 28,161,231.35 × 11,239,332.18
  4. Step 4: Simplify right side
    20,406,689.43x = 316,513,433,740,479.88
  5. Step 5: Solve for x
    x = 316,513,433,740,479.88/20,406,689.43
  6. Step 6: Final answer
    x = 15,510,278.37

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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.