Home / 20,386,069.68-28,132,780.26-11,218,712.40

Finding the Fourth Proportional to 20,386,069.68, 28,132,780.26 and 11,218,712.40

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Solution

The fourth proportional to 20,386,069.68, 28,132,780.26 and 11,218,712.40 is: 15,481,825.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,069.68 : 28,132,780.26 = 11,218,712.40 : x
  2. Step 2: Convert to fraction form
    20,386,069.68/28,132,780.26 = 11,218,712.40/x
  3. Step 3: Cross multiply
    20,386,069.68x = 28,132,780.26 × 11,218,712.40
  4. Step 4: Simplify right side
    20,386,069.68x = 315,613,570,749,337.25
  5. Step 5: Solve for x
    x = 315,613,570,749,337.25/20,386,069.68
  6. Step 6: Final answer
    x = 15,481,825.37

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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.