Home / 15,141.76-20,895.60-8,427.23

Finding the Fourth Proportional to 15,141.76, 20,895.60 and 8,427.23

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Solution

The fourth proportional to 15,141.76, 20,895.60 and 8,427.23 is: 11,629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.76 : 20,895.60 = 8,427.23 : x
  2. Step 2: Convert to fraction form
    15,141.76/20,895.60 = 8,427.23/x
  3. Step 3: Cross multiply
    15,141.76x = 20,895.60 × 8,427.23
  4. Step 4: Simplify right side
    15,141.76x = 176,091,943.78
  5. Step 5: Solve for x
    x = 176,091,943.78/15,141.76
  6. Step 6: Final answer
    x = 11,629.56

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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.