Home / 15,141.52-20,896.27-8,427.12

Finding the Fourth Proportional to 15,141.52, 20,896.27 and 8,427.12

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Solution

The fourth proportional to 15,141.52, 20,896.27 and 8,427.12 is: 11,629.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,141.52 : 20,896.27 = 8,427.12 : x
  2. Step 2: Convert to fraction form
    15,141.52/20,896.27 = 8,427.12/x
  3. Step 3: Cross multiply
    15,141.52x = 20,896.27 × 8,427.12
  4. Step 4: Simplify right side
    15,141.52x = 176,095,374.84
  5. Step 5: Solve for x
    x = 176,095,374.84/15,141.52
  6. Step 6: Final answer
    x = 11,629.97

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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.