Home / 21,151,858.08-29,186,951.22-12,888,908.76

Finding the Fourth Proportional to 21,151,858.08, 29,186,951.22 and 12,888,908.76

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Solution

The fourth proportional to 21,151,858.08, 29,186,951.22 and 12,888,908.76 is: 17,785,101.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151,858.08 : 29,186,951.22 = 12,888,908.76 : x
  2. Step 2: Convert to fraction form
    21,151,858.08/29,186,951.22 = 12,888,908.76/x
  3. Step 3: Cross multiply
    21,151,858.08x = 29,186,951.22 × 12,888,908.76
  4. Step 4: Simplify right side
    21,151,858.08x = 376,187,951,257,150.69
  5. Step 5: Solve for x
    x = 376,187,951,257,150.69/21,151,858.08
  6. Step 6: Final answer
    x = 17,785,101.90

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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.