Home / 31,442.76-43,387.07-21,255.96

Finding the Fourth Proportional to 31,442.76, 43,387.07 and 21,255.96

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Solution

The fourth proportional to 31,442.76, 43,387.07 and 21,255.96 is: 29,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.76 : 43,387.07 = 21,255.96 : x
  2. Step 2: Convert to fraction form
    31,442.76/43,387.07 = 21,255.96/x
  3. Step 3: Cross multiply
    31,442.76x = 43,387.07 × 21,255.96
  4. Step 4: Simplify right side
    31,442.76x = 922,233,756.37
  5. Step 5: Solve for x
    x = 922,233,756.37/31,442.76
  6. Step 6: Final answer
    x = 29,330.56

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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.