Home / 20,923.02-28,892.52-15,608.61

Finding the Fourth Proportional to 20,923.02, 28,892.52 and 15,608.61

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Solution

The fourth proportional to 20,923.02, 28,892.52 and 15,608.61 is: 21,553.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,923.02 : 28,892.52 = 15,608.61 : x
  2. Step 2: Convert to fraction form
    20,923.02/28,892.52 = 15,608.61/x
  3. Step 3: Cross multiply
    20,923.02x = 28,892.52 × 15,608.61
  4. Step 4: Simplify right side
    20,923.02x = 450,972,076.60
  5. Step 5: Solve for x
    x = 450,972,076.60/20,923.02
  6. Step 6: Final answer
    x = 21,553.87

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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.