Home / 15,314,278.70-21,132,709.85-8,438,760.77

Finding the Fourth Proportional to 15,314,278.70, 21,132,709.85 and 8,438,760.77

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Solution

The fourth proportional to 15,314,278.70, 21,132,709.85 and 8,438,760.77 is: 11,644,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,314,278.70 : 21,132,709.85 = 8,438,760.77 : x
  2. Step 2: Convert to fraction form
    15,314,278.70/21,132,709.85 = 8,438,760.77/x
  3. Step 3: Cross multiply
    15,314,278.70x = 21,132,709.85 × 8,438,760.77
  4. Step 4: Simplify right side
    15,314,278.70x = 178,333,882,761,405.94
  5. Step 5: Solve for x
    x = 178,333,882,761,405.94/15,314,278.70
  6. Step 6: Final answer
    x = 11,644,941.71

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1.5x scale

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.