Home / 20,776.16-31,170.84-8,924.24

Finding the Fourth Proportional to 20,776.16, 31,170.84 and 8,924.24

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Solution

The fourth proportional to 20,776.16, 31,170.84 and 8,924.24 is: 13,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.16 : 31,170.84 = 8,924.24 : x
  2. Step 2: Convert to fraction form
    20,776.16/31,170.84 = 8,924.24/x
  3. Step 3: Cross multiply
    20,776.16x = 31,170.84 × 8,924.24
  4. Step 4: Simplify right side
    20,776.16x = 278,176,057.16
  5. Step 5: Solve for x
    x = 278,176,057.16/20,776.16
  6. Step 6: Final answer
    x = 13,389.19

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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.