Home / 11,055.28-16,566.68-8,720.88

Finding the Fourth Proportional to 11,055.28, 16,566.68 and 8,720.88

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Solution

The fourth proportional to 11,055.28, 16,566.68 and 8,720.88 is: 13,068.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,055.28 : 16,566.68 = 8,720.88 : x
  2. Step 2: Convert to fraction form
    11,055.28/16,566.68 = 8,720.88/x
  3. Step 3: Cross multiply
    11,055.28x = 16,566.68 × 8,720.88
  4. Step 4: Simplify right side
    11,055.28x = 144,476,028.28
  5. Step 5: Solve for x
    x = 144,476,028.28/11,055.28
  6. Step 6: Final answer
    x = 13,068.51

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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.