Home / 20,776.32-31,146.48-9,080.64

Finding the Fourth Proportional to 20,776.32, 31,146.48 and 9,080.64

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Solution

The fourth proportional to 20,776.32, 31,146.48 and 9,080.64 is: 13,613.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.32 : 31,146.48 = 9,080.64 : x
  2. Step 2: Convert to fraction form
    20,776.32/31,146.48 = 9,080.64/x
  3. Step 3: Cross multiply
    20,776.32x = 31,146.48 × 9,080.64
  4. Step 4: Simplify right side
    20,776.32x = 282,829,972.15
  5. Step 5: Solve for x
    x = 282,829,972.15/20,776.32
  6. Step 6: Final answer
    x = 13,613.09

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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.