Home / 20,966.08-31,449.15-5,383.71

Finding the Fourth Proportional to 20,966.08, 31,449.15 and 5,383.71

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Solution

The fourth proportional to 20,966.08, 31,449.15 and 5,383.71 is: 8,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.08 : 31,449.15 = 5,383.71 : x
  2. Step 2: Convert to fraction form
    20,966.08/31,449.15 = 5,383.71/x
  3. Step 3: Cross multiply
    20,966.08x = 31,449.15 × 5,383.71
  4. Step 4: Simplify right side
    20,966.08x = 169,313,103.35
  5. Step 5: Solve for x
    x = 169,313,103.35/20,966.08
  6. Step 6: Final answer
    x = 8,075.57

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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.