Home / 28,255.59-38,993.19-15,509.97

Finding the Fourth Proportional to 28,255.59, 38,993.19 and 15,509.97

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Solution

The fourth proportional to 28,255.59, 38,993.19 and 15,509.97 is: 21,404.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255.59 : 38,993.19 = 15,509.97 : x
  2. Step 2: Convert to fraction form
    28,255.59/38,993.19 = 15,509.97/x
  3. Step 3: Cross multiply
    28,255.59x = 38,993.19 × 15,509.97
  4. Step 4: Simplify right side
    28,255.59x = 604,783,207.10
  5. Step 5: Solve for x
    x = 604,783,207.10/28,255.59
  6. Step 6: Final answer
    x = 21,404.02

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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.