Home / 20,386,095.32-28,132,815.41-11,218,738.07

Finding the Fourth Proportional to 20,386,095.32, 28,132,815.41 and 11,218,738.07

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Solution

The fourth proportional to 20,386,095.32, 28,132,815.41 and 11,218,738.07 is: 15,481,860.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,095.32 : 28,132,815.41 = 11,218,738.07 : x
  2. Step 2: Convert to fraction form
    20,386,095.32/28,132,815.41 = 11,218,738.07/x
  3. Step 3: Cross multiply
    20,386,095.32x = 28,132,815.41 × 11,218,738.07
  4. Step 4: Simplify right side
    20,386,095.32x = 315,614,687,312,758.31
  5. Step 5: Solve for x
    x = 315,614,687,312,758.31/20,386,095.32
  6. Step 6: Final answer
    x = 15,481,860.67

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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.