Home / 22,750.18-31,425.92-20,628.12

Finding the Fourth Proportional to 22,750.18, 31,425.92 and 20,628.12

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Solution

The fourth proportional to 22,750.18, 31,425.92 and 20,628.12 is: 28,494.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,750.18 : 31,425.92 = 20,628.12 : x
  2. Step 2: Convert to fraction form
    22,750.18/31,425.92 = 20,628.12/x
  3. Step 3: Cross multiply
    22,750.18x = 31,425.92 × 20,628.12
  4. Step 4: Simplify right side
    22,750.18x = 648,257,388.60
  5. Step 5: Solve for x
    x = 648,257,388.60/22,750.18
  6. Step 6: Final answer
    x = 28,494.60

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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.