Home / 15,359.97-21,195.14-8,645.49

Finding the Fourth Proportional to 15,359.97, 21,195.14 and 8,645.49

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Solution

The fourth proportional to 15,359.97, 21,195.14 and 8,645.49 is: 11,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359.97 : 21,195.14 = 8,645.49 : x
  2. Step 2: Convert to fraction form
    15,359.97/21,195.14 = 8,645.49/x
  3. Step 3: Cross multiply
    15,359.97x = 21,195.14 × 8,645.49
  4. Step 4: Simplify right side
    15,359.97x = 183,242,327.69
  5. Step 5: Solve for x
    x = 183,242,327.69/15,359.97
  6. Step 6: Final answer
    x = 11,929.86

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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.