Home / 20,732.01-31,111.35-20,655.48

Finding the Fourth Proportional to 20,732.01, 31,111.35 and 20,655.48

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Solution

The fourth proportional to 20,732.01, 31,111.35 and 20,655.48 is: 30,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.01 : 31,111.35 = 20,655.48 : x
  2. Step 2: Convert to fraction form
    20,732.01/31,111.35 = 20,655.48/x
  3. Step 3: Cross multiply
    20,732.01x = 31,111.35 × 20,655.48
  4. Step 4: Simplify right side
    20,732.01x = 642,619,867.70
  5. Step 5: Solve for x
    x = 642,619,867.70/20,732.01
  6. Step 6: Final answer
    x = 30,996.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.