Home / 20,250.60-30,531.72-19,887.72

Finding the Fourth Proportional to 20,250.60, 30,531.72 and 19,887.72

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Solution

The fourth proportional to 20,250.60, 30,531.72 and 19,887.72 is: 29,984.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,250.60 : 30,531.72 = 19,887.72 : x
  2. Step 2: Convert to fraction form
    20,250.60/30,531.72 = 19,887.72/x
  3. Step 3: Cross multiply
    20,250.60x = 30,531.72 × 19,887.72
  4. Step 4: Simplify right side
    20,250.60x = 607,206,298.48
  5. Step 5: Solve for x
    x = 607,206,298.48/20,250.60
  6. Step 6: Final answer
    x = 29,984.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.