Home / 12,425,344.78-17,148,479.78-7,128,978.90

Finding the Fourth Proportional to 12,425,344.78, 17,148,479.78 and 7,128,978.90

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Solution

The fourth proportional to 12,425,344.78, 17,148,479.78 and 7,128,978.90 is: 9,838,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425,344.78 : 17,148,479.78 = 7,128,978.90 : x
  2. Step 2: Convert to fraction form
    12,425,344.78/17,148,479.78 = 7,128,978.90/x
  3. Step 3: Cross multiply
    12,425,344.78x = 17,148,479.78 × 7,128,978.90
  4. Step 4: Simplify right side
    12,425,344.78x = 122,251,150,518,696.66
  5. Step 5: Solve for x
    x = 122,251,150,518,696.66/12,425,344.78
  6. Step 6: Final answer
    x = 9,838,853.79

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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.