Home / 12,982,288.15-17,915,336.49-7,181,065.18

Finding the Fourth Proportional to 12,982,288.15, 17,915,336.49 and 7,181,065.18

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Solution

The fourth proportional to 12,982,288.15, 17,915,336.49 and 7,181,065.18 is: 9,909,747.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,982,288.15 : 17,915,336.49 = 7,181,065.18 : x
  2. Step 2: Convert to fraction form
    12,982,288.15/17,915,336.49 = 7,181,065.18/x
  3. Step 3: Cross multiply
    12,982,288.15x = 17,915,336.49 × 7,181,065.18
  4. Step 4: Simplify right side
    12,982,288.15x = 128,651,199,056,322.41
  5. Step 5: Solve for x
    x = 128,651,199,056,322.41/12,982,288.15
  6. Step 6: Final answer
    x = 9,909,747.62

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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.