Home / 20,959.55-31,443.21-6,920.56

Finding the Fourth Proportional to 20,959.55, 31,443.21 and 6,920.56

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Solution

The fourth proportional to 20,959.55, 31,443.21 and 6,920.56 is: 10,382.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.55 : 31,443.21 = 6,920.56 : x
  2. Step 2: Convert to fraction form
    20,959.55/31,443.21 = 6,920.56/x
  3. Step 3: Cross multiply
    20,959.55x = 31,443.21 × 6,920.56
  4. Step 4: Simplify right side
    20,959.55x = 217,604,429.58
  5. Step 5: Solve for x
    x = 217,604,429.58/20,959.55
  6. Step 6: Final answer
    x = 10,382.11

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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.