Home / 20,962.08-31,443.12-5,379.71

Finding the Fourth Proportional to 20,962.08, 31,443.12 and 5,379.71

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Solution

The fourth proportional to 20,962.08, 31,443.12 and 5,379.71 is: 8,069.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.08 : 31,443.12 = 5,379.71 : x
  2. Step 2: Convert to fraction form
    20,962.08/31,443.12 = 5,379.71/x
  3. Step 3: Cross multiply
    20,962.08x = 31,443.12 × 5,379.71
  4. Step 4: Simplify right side
    20,962.08x = 169,154,709.88
  5. Step 5: Solve for x
    x = 169,154,709.88/20,962.08
  6. Step 6: Final answer
    x = 8,069.56

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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.