Home / 10,820.16-16,268.88-9,964.80

Finding the Fourth Proportional to 10,820.16, 16,268.88 and 9,964.80

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Solution

The fourth proportional to 10,820.16, 16,268.88 and 9,964.80 is: 14,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,820.16 : 16,268.88 = 9,964.80 : x
  2. Step 2: Convert to fraction form
    10,820.16/16,268.88 = 9,964.80/x
  3. Step 3: Cross multiply
    10,820.16x = 16,268.88 × 9,964.80
  4. Step 4: Simplify right side
    10,820.16x = 162,116,135.42
  5. Step 5: Solve for x
    x = 162,116,135.42/10,820.16
  6. Step 6: Final answer
    x = 14,982.79

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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.