Home / 20,733.60-31,100.40-7,587.30

Finding the Fourth Proportional to 20,733.60, 31,100.40 and 7,587.30

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Solution

The fourth proportional to 20,733.60, 31,100.40 and 7,587.30 is: 11,380.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.60 : 31,100.40 = 7,587.30 : x
  2. Step 2: Convert to fraction form
    20,733.60/31,100.40 = 7,587.30/x
  3. Step 3: Cross multiply
    20,733.60x = 31,100.40 × 7,587.30
  4. Step 4: Simplify right side
    20,733.60x = 235,968,064.92
  5. Step 5: Solve for x
    x = 235,968,064.92/20,733.60
  6. Step 6: Final answer
    x = 11,380.95

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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.