Home / 20,310.08-28,026-11,357.28

Finding the Fourth Proportional to 20,310.08, 28,026 and 11,357.28

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Solution

The fourth proportional to 20,310.08, 28,026 and 11,357.28 is: 15,671.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.08 : 28,026 = 11,357.28 : x
  2. Step 2: Convert to fraction form
    20,310.08/28,026 = 11,357.28/x
  3. Step 3: Cross multiply
    20,310.08x = 28,026 × 11,357.28
  4. Step 4: Simplify right side
    20,310.08x = 318,299,129.28
  5. Step 5: Solve for x
    x = 318,299,129.28/20,310.08
  6. Step 6: Final answer
    x = 15,671.98

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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.