Home / 13,218,002.76-18,240,990.78-7,338,034.56

Finding the Fourth Proportional to 13,218,002.76, 18,240,990.78 and 7,338,034.56

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Solution

The fourth proportional to 13,218,002.76, 18,240,990.78 and 7,338,034.56 is: 10,126,569.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218,002.76 : 18,240,990.78 = 7,338,034.56 : x
  2. Step 2: Convert to fraction form
    13,218,002.76/18,240,990.78 = 7,338,034.56/x
  3. Step 3: Cross multiply
    13,218,002.76x = 18,240,990.78 × 7,338,034.56
  4. Step 4: Simplify right side
    13,218,002.76x = 133,853,020,752,281.36
  5. Step 5: Solve for x
    x = 133,853,020,752,281.36/13,218,002.76
  6. Step 6: Final answer
    x = 10,126,569.28

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Double scale
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1.5x scale

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.