Home / 13,129,511.52-18,119,638.83-7,329,425.52

Finding the Fourth Proportional to 13,129,511.52, 18,119,638.83 and 7,329,425.52

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Solution

The fourth proportional to 13,129,511.52, 18,119,638.83 and 7,329,425.52 is: 10,115,116.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129,511.52 : 18,119,638.83 = 7,329,425.52 : x
  2. Step 2: Convert to fraction form
    13,129,511.52/18,119,638.83 = 7,329,425.52/x
  3. Step 3: Cross multiply
    13,129,511.52x = 18,119,638.83 × 7,329,425.52
  4. Step 4: Simplify right side
    13,129,511.52x = 132,806,543,253,784.92
  5. Step 5: Solve for x
    x = 132,806,543,253,784.92/13,129,511.52
  6. Step 6: Final answer
    x = 10,115,116.85

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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.