Home / 20,710.68-28,581.75-11,758.02

Finding the Fourth Proportional to 20,710.68, 28,581.75 and 11,758.02

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Solution

The fourth proportional to 20,710.68, 28,581.75 and 11,758.02 is: 16,226.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.68 : 28,581.75 = 11,758.02 : x
  2. Step 2: Convert to fraction form
    20,710.68/28,581.75 = 11,758.02/x
  3. Step 3: Cross multiply
    20,710.68x = 28,581.75 × 11,758.02
  4. Step 4: Simplify right side
    20,710.68x = 336,064,788.14
  5. Step 5: Solve for x
    x = 336,064,788.14/20,710.68
  6. Step 6: Final answer
    x = 16,226.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.