Home / 20,899.64-28,842.60-11,468.21

Finding the Fourth Proportional to 20,899.64, 28,842.60 and 11,468.21

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Solution

The fourth proportional to 20,899.64, 28,842.60 and 11,468.21 is: 15,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,899.64 : 28,842.60 = 11,468.21 : x
  2. Step 2: Convert to fraction form
    20,899.64/28,842.60 = 11,468.21/x
  3. Step 3: Cross multiply
    20,899.64x = 28,842.60 × 11,468.21
  4. Step 4: Simplify right side
    20,899.64x = 330,772,849.53
  5. Step 5: Solve for x
    x = 330,772,849.53/20,899.64
  6. Step 6: Final answer
    x = 15,826.73

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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.