Home / 13,218,001.76-18,240,989.40-7,338,033.56

Finding the Fourth Proportional to 13,218,001.76, 18,240,989.40 and 7,338,033.56

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Solution

The fourth proportional to 13,218,001.76, 18,240,989.40 and 7,338,033.56 is: 10,126,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218,001.76 : 18,240,989.40 = 7,338,033.56 : x
  2. Step 2: Convert to fraction form
    13,218,001.76/18,240,989.40 = 7,338,033.56/x
  3. Step 3: Cross multiply
    13,218,001.76x = 18,240,989.40 × 7,338,033.56
  4. Step 4: Simplify right side
    13,218,001.76x = 133,852,992,293,599.30
  5. Step 5: Solve for x
    x = 133,852,992,293,599.30/13,218,001.76
  6. Step 6: Final answer
    x = 10,126,567.90

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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.