Home / 20,415,152.12-28,172,894.61-11,247,794.87

Finding the Fourth Proportional to 20,415,152.12, 28,172,894.61 and 11,247,794.87

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Solution

The fourth proportional to 20,415,152.12, 28,172,894.61 and 11,247,794.87 is: 15,521,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415,152.12 : 28,172,894.61 = 11,247,794.87 : x
  2. Step 2: Convert to fraction form
    20,415,152.12/28,172,894.61 = 11,247,794.87/x
  3. Step 3: Cross multiply
    20,415,152.12x = 28,172,894.61 × 11,247,794.87
  4. Step 4: Simplify right side
    20,415,152.12x = 316,882,939,368,723.44
  5. Step 5: Solve for x
    x = 316,882,939,368,723.44/20,415,152.12
  6. Step 6: Final answer
    x = 15,521,948.48

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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.