Home / 20,508.93-28,273.46-15,478.83

Finding the Fourth Proportional to 20,508.93, 28,273.46 and 15,478.83

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Solution

The fourth proportional to 20,508.93, 28,273.46 and 15,478.83 is: 21,339.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,508.93 : 28,273.46 = 15,478.83 : x
  2. Step 2: Convert to fraction form
    20,508.93/28,273.46 = 15,478.83/x
  3. Step 3: Cross multiply
    20,508.93x = 28,273.46 × 15,478.83
  4. Step 4: Simplify right side
    20,508.93x = 437,640,003.46
  5. Step 5: Solve for x
    x = 437,640,003.46/20,508.93
  6. Step 6: Final answer
    x = 21,339.00

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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.