Home / 20,701.40-31,052.10-18,854.60

Finding the Fourth Proportional to 20,701.40, 31,052.10 and 18,854.60

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Solution

The fourth proportional to 20,701.40, 31,052.10 and 18,854.60 is: 28,281.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.40 : 31,052.10 = 18,854.60 : x
  2. Step 2: Convert to fraction form
    20,701.40/31,052.10 = 18,854.60/x
  3. Step 3: Cross multiply
    20,701.40x = 31,052.10 × 18,854.60
  4. Step 4: Simplify right side
    20,701.40x = 585,474,924.66
  5. Step 5: Solve for x
    x = 585,474,924.66/20,701.40
  6. Step 6: Final answer
    x = 28,281.90

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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.