Home / 15,258.42-21,057.33-8,542.71

Finding the Fourth Proportional to 15,258.42, 21,057.33 and 8,542.71

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Solution

The fourth proportional to 15,258.42, 21,057.33 and 8,542.71 is: 11,789.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,258.42 : 21,057.33 = 8,542.71 : x
  2. Step 2: Convert to fraction form
    15,258.42/21,057.33 = 8,542.71/x
  3. Step 3: Cross multiply
    15,258.42x = 21,057.33 × 8,542.71
  4. Step 4: Simplify right side
    15,258.42x = 179,886,663.56
  5. Step 5: Solve for x
    x = 179,886,663.56/15,258.42
  6. Step 6: Final answer
    x = 11,789.34

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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.