Home / 20,678.11-31,017.17-5,095.73

Finding the Fourth Proportional to 20,678.11, 31,017.17 and 5,095.73

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Solution

The fourth proportional to 20,678.11, 31,017.17 and 5,095.73 is: 7,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.11 : 31,017.17 = 5,095.73 : x
  2. Step 2: Convert to fraction form
    20,678.11/31,017.17 = 5,095.73/x
  3. Step 3: Cross multiply
    20,678.11x = 31,017.17 × 5,095.73
  4. Step 4: Simplify right side
    20,678.11x = 158,055,123.68
  5. Step 5: Solve for x
    x = 158,055,123.68/20,678.11
  6. Step 6: Final answer
    x = 7,643.60

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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.