Home / 20,701.60-31,052.40-7,549.60

Finding the Fourth Proportional to 20,701.60, 31,052.40 and 7,549.60

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Solution

The fourth proportional to 20,701.60, 31,052.40 and 7,549.60 is: 11,324.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.60 : 31,052.40 = 7,549.60 : x
  2. Step 2: Convert to fraction form
    20,701.60/31,052.40 = 7,549.60/x
  3. Step 3: Cross multiply
    20,701.60x = 31,052.40 × 7,549.60
  4. Step 4: Simplify right side
    20,701.60x = 234,433,199.04
  5. Step 5: Solve for x
    x = 234,433,199.04/20,701.60
  6. Step 6: Final answer
    x = 11,324.40

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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.