Home / 20,777.54-31,306.56-17,160.78

Finding the Fourth Proportional to 20,777.54, 31,306.56 and 17,160.78

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Solution

The fourth proportional to 20,777.54, 31,306.56 and 17,160.78 is: 25,857.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.54 : 31,306.56 = 17,160.78 : x
  2. Step 2: Convert to fraction form
    20,777.54/31,306.56 = 17,160.78/x
  3. Step 3: Cross multiply
    20,777.54x = 31,306.56 × 17,160.78
  4. Step 4: Simplify right side
    20,777.54x = 537,245,041.76
  5. Step 5: Solve for x
    x = 537,245,041.76/20,777.54
  6. Step 6: Final answer
    x = 25,857.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.