Home / 18,912.40-28,373.20-5,765.02

Finding the Fourth Proportional to 18,912.40, 28,373.20 and 5,765.02

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Solution

The fourth proportional to 18,912.40, 28,373.20 and 5,765.02 is: 8,648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,912.40 : 28,373.20 = 5,765.02 : x
  2. Step 2: Convert to fraction form
    18,912.40/28,373.20 = 5,765.02/x
  3. Step 3: Cross multiply
    18,912.40x = 28,373.20 × 5,765.02
  4. Step 4: Simplify right side
    18,912.40x = 163,572,065.46
  5. Step 5: Solve for x
    x = 163,572,065.46/18,912.40
  6. Step 6: Final answer
    x = 8,648.93

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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.