Home / 31,314.60-43,230.78-21,296.52

Finding the Fourth Proportional to 31,314.60, 43,230.78 and 21,296.52

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Solution

The fourth proportional to 31,314.60, 43,230.78 and 21,296.52 is: 29,400.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,314.60 : 43,230.78 = 21,296.52 : x
  2. Step 2: Convert to fraction form
    31,314.60/43,230.78 = 21,296.52/x
  3. Step 3: Cross multiply
    31,314.60x = 43,230.78 × 21,296.52
  4. Step 4: Simplify right side
    31,314.60x = 920,665,170.89
  5. Step 5: Solve for x
    x = 920,665,170.89/31,314.60
  6. Step 6: Final answer
    x = 29,400.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.