Home / 15,086.47-20,818.59-8,371.57

Finding the Fourth Proportional to 15,086.47, 20,818.59 and 8,371.57

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Solution

The fourth proportional to 15,086.47, 20,818.59 and 8,371.57 is: 11,552.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.47 : 20,818.59 = 8,371.57 : x
  2. Step 2: Convert to fraction form
    15,086.47/20,818.59 = 8,371.57/x
  3. Step 3: Cross multiply
    15,086.47x = 20,818.59 × 8,371.57
  4. Step 4: Simplify right side
    15,086.47x = 174,284,283.49
  5. Step 5: Solve for x
    x = 174,284,283.49/15,086.47
  6. Step 6: Final answer
    x = 11,552.36

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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.