Home / 28,028.38-38,679.67-15,281.66

Finding the Fourth Proportional to 28,028.38, 38,679.67 and 15,281.66

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Solution

The fourth proportional to 28,028.38, 38,679.67 and 15,281.66 is: 21,088.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.38 : 38,679.67 = 15,281.66 : x
  2. Step 2: Convert to fraction form
    28,028.38/38,679.67 = 15,281.66/x
  3. Step 3: Cross multiply
    28,028.38x = 38,679.67 × 15,281.66
  4. Step 4: Simplify right side
    28,028.38x = 591,089,565.85
  5. Step 5: Solve for x
    x = 591,089,565.85/28,028.38
  6. Step 6: Final answer
    x = 21,088.97

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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.