Home / 20,386,065.75-28,132,774.86-11,218,708.50

Finding the Fourth Proportional to 20,386,065.75, 28,132,774.86 and 11,218,708.50

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Solution

The fourth proportional to 20,386,065.75, 28,132,774.86 and 11,218,708.50 is: 15,481,820.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,065.75 : 28,132,774.86 = 11,218,708.50 : x
  2. Step 2: Convert to fraction form
    20,386,065.75/28,132,774.86 = 11,218,708.50/x
  3. Step 3: Cross multiply
    20,386,065.75x = 28,132,774.86 × 11,218,708.50
  4. Step 4: Simplify right side
    20,386,065.75x = 315,613,400,450,468.31
  5. Step 5: Solve for x
    x = 315,613,400,450,468.31/20,386,065.75
  6. Step 6: Final answer
    x = 15,481,820.00

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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.