Home / 20,899.16-31,350.76-6,107.74

Finding the Fourth Proportional to 20,899.16, 31,350.76 and 6,107.74

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Solution

The fourth proportional to 20,899.16, 31,350.76 and 6,107.74 is: 9,162.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.16 : 31,350.76 = 6,107.74 : x
  2. Step 2: Convert to fraction form
    20,899.16/31,350.76 = 6,107.74/x
  3. Step 3: Cross multiply
    20,899.16x = 31,350.76 × 6,107.74
  4. Step 4: Simplify right side
    20,899.16x = 191,482,290.88
  5. Step 5: Solve for x
    x = 191,482,290.88/20,899.16
  6. Step 6: Final answer
    x = 9,162.20

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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.