Home / 28,174.14-38,881.24-15,427.86

Finding the Fourth Proportional to 28,174.14, 38,881.24 and 15,427.86

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Solution

The fourth proportional to 28,174.14, 38,881.24 and 15,427.86 is: 21,290.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174.14 : 38,881.24 = 15,427.86 : x
  2. Step 2: Convert to fraction form
    28,174.14/38,881.24 = 15,427.86/x
  3. Step 3: Cross multiply
    28,174.14x = 38,881.24 × 15,427.86
  4. Step 4: Simplify right side
    28,174.14x = 599,854,426.55
  5. Step 5: Solve for x
    x = 599,854,426.55/28,174.14
  6. Step 6: Final answer
    x = 21,290.96

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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.