Home / 20,750.06-31,146.72-18,393.11

Finding the Fourth Proportional to 20,750.06, 31,146.72 and 18,393.11

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Solution

The fourth proportional to 20,750.06, 31,146.72 and 18,393.11 is: 27,608.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.06 : 31,146.72 = 18,393.11 : x
  2. Step 2: Convert to fraction form
    20,750.06/31,146.72 = 18,393.11/x
  3. Step 3: Cross multiply
    20,750.06x = 31,146.72 × 18,393.11
  4. Step 4: Simplify right side
    20,750.06x = 572,885,047.10
  5. Step 5: Solve for x
    x = 572,885,047.10/20,750.06
  6. Step 6: Final answer
    x = 27,608.84

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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.