Home / 15,538,364.76-21,447,078.85-9,178,790.96

Finding the Fourth Proportional to 15,538,364.76, 21,447,078.85 and 9,178,790.96

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Solution

The fourth proportional to 15,538,364.76, 21,447,078.85 and 9,178,790.96 is: 12,669,174.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538,364.76 : 21,447,078.85 = 9,178,790.96 : x
  2. Step 2: Convert to fraction form
    15,538,364.76/21,447,078.85 = 9,178,790.96/x
  3. Step 3: Cross multiply
    15,538,364.76x = 21,447,078.85 × 9,178,790.96
  4. Step 4: Simplify right side
    15,538,364.76x = 196,858,253,411,238.56
  5. Step 5: Solve for x
    x = 196,858,253,411,238.56/15,538,364.76
  6. Step 6: Final answer
    x = 12,669,174.42

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Double scale
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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.