Home / 12,425,343.78-17,148,478.41-7,128,977.91

Finding the Fourth Proportional to 12,425,343.78, 17,148,478.41 and 7,128,977.91

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Solution

The fourth proportional to 12,425,343.78, 17,148,478.41 and 7,128,977.91 is: 9,838,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425,343.78 : 17,148,478.41 = 7,128,977.91 : x
  2. Step 2: Convert to fraction form
    12,425,343.78/17,148,478.41 = 7,128,977.91/x
  3. Step 3: Cross multiply
    12,425,343.78x = 17,148,478.41 × 7,128,977.91
  4. Step 4: Simplify right side
    12,425,343.78x = 122,251,123,775,001.92
  5. Step 5: Solve for x
    x = 122,251,123,775,001.92/12,425,343.78
  6. Step 6: Final answer
    x = 9,838,852.42

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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.