Home / 20,868.18-31,304.20-7,544.50

Finding the Fourth Proportional to 20,868.18, 31,304.20 and 7,544.50

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Solution

The fourth proportional to 20,868.18, 31,304.20 and 7,544.50 is: 11,317.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.18 : 31,304.20 = 7,544.50 : x
  2. Step 2: Convert to fraction form
    20,868.18/31,304.20 = 7,544.50/x
  3. Step 3: Cross multiply
    20,868.18x = 31,304.20 × 7,544.50
  4. Step 4: Simplify right side
    20,868.18x = 236,174,676.68
  5. Step 5: Solve for x
    x = 236,174,676.68/20,868.18
  6. Step 6: Final answer
    x = 11,317.46

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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.