Home / 15,141.46-20,895.56-8,427.78

Finding the Fourth Proportional to 15,141.46, 20,895.56 and 8,427.78

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Solution

The fourth proportional to 15,141.46, 20,895.56 and 8,427.78 is: 11,630.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.46 : 20,895.56 = 8,427.78 : x
  2. Step 2: Convert to fraction form
    15,141.46/20,895.56 = 8,427.78/x
  3. Step 3: Cross multiply
    15,141.46x = 20,895.56 × 8,427.78
  4. Step 4: Simplify right side
    15,141.46x = 176,103,182.66
  5. Step 5: Solve for x
    x = 176,103,182.66/15,141.46
  6. Step 6: Final answer
    x = 11,630.53

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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.