Home / 20,652.12-28,500-12,154.56

Finding the Fourth Proportional to 20,652.12, 28,500 and 12,154.56

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Solution

The fourth proportional to 20,652.12, 28,500 and 12,154.56 is: 16,773.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.12 : 28,500 = 12,154.56 : x
  2. Step 2: Convert to fraction form
    20,652.12/28,500 = 12,154.56/x
  3. Step 3: Cross multiply
    20,652.12x = 28,500 × 12,154.56
  4. Step 4: Simplify right side
    20,652.12x = 346,404,960
  5. Step 5: Solve for x
    x = 346,404,960/20,652.12
  6. Step 6: Final answer
    x = 16,773.34

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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.