Home / 20,743.60-31,115.40-7,597.30

Finding the Fourth Proportional to 20,743.60, 31,115.40 and 7,597.30

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Solution

The fourth proportional to 20,743.60, 31,115.40 and 7,597.30 is: 11,395.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.60 : 31,115.40 = 7,597.30 : x
  2. Step 2: Convert to fraction form
    20,743.60/31,115.40 = 7,597.30/x
  3. Step 3: Cross multiply
    20,743.60x = 31,115.40 × 7,597.30
  4. Step 4: Simplify right side
    20,743.60x = 236,393,028.42
  5. Step 5: Solve for x
    x = 236,393,028.42/20,743.60
  6. Step 6: Final answer
    x = 11,395.95

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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.