Home / 20,899.68-28,842.12-11,468.58

Finding the Fourth Proportional to 20,899.68, 28,842.12 and 11,468.58

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Solution

The fourth proportional to 20,899.68, 28,842.12 and 11,468.58 is: 15,826.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.68 : 28,842.12 = 11,468.58 : x
  2. Step 2: Convert to fraction form
    20,899.68/28,842.12 = 11,468.58/x
  3. Step 3: Cross multiply
    20,899.68x = 28,842.12 × 11,468.58
  4. Step 4: Simplify right side
    20,899.68x = 330,778,160.59
  5. Step 5: Solve for x
    x = 330,778,160.59/20,899.68
  6. Step 6: Final answer
    x = 15,826.95

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1.5x scale

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.