Home / 28,079.13-38,749.20-15,504.69

Finding the Fourth Proportional to 28,079.13, 38,749.20 and 15,504.69

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Solution

The fourth proportional to 28,079.13, 38,749.20 and 15,504.69 is: 21,396.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.13 : 38,749.20 = 15,504.69 : x
  2. Step 2: Convert to fraction form
    28,079.13/38,749.20 = 15,504.69/x
  3. Step 3: Cross multiply
    28,079.13x = 38,749.20 × 15,504.69
  4. Step 4: Simplify right side
    28,079.13x = 600,794,333.75
  5. Step 5: Solve for x
    x = 600,794,333.75/28,079.13
  6. Step 6: Final answer
    x = 21,396.47

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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.