Home / 30,556.79-42,170.12-22,989.57

Finding the Fourth Proportional to 30,556.79, 42,170.12 and 22,989.57

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Solution

The fourth proportional to 30,556.79, 42,170.12 and 22,989.57 is: 31,726.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,556.79 : 42,170.12 = 22,989.57 : x
  2. Step 2: Convert to fraction form
    30,556.79/42,170.12 = 22,989.57/x
  3. Step 3: Cross multiply
    30,556.79x = 42,170.12 × 22,989.57
  4. Step 4: Simplify right side
    30,556.79x = 969,472,975.98
  5. Step 5: Solve for x
    x = 969,472,975.98/30,556.79
  6. Step 6: Final answer
    x = 31,726.92

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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.