Home / 20,453.50-28,233.12-12,070

Finding the Fourth Proportional to 20,453.50, 28,233.12 and 12,070

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Solution

The fourth proportional to 20,453.50, 28,233.12 and 12,070 is: 16,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.50 : 28,233.12 = 12,070 : x
  2. Step 2: Convert to fraction form
    20,453.50/28,233.12 = 12,070/x
  3. Step 3: Cross multiply
    20,453.50x = 28,233.12 × 12,070
  4. Step 4: Simplify right side
    20,453.50x = 340,773,758.40
  5. Step 5: Solve for x
    x = 340,773,758.40/20,453.50
  6. Step 6: Final answer
    x = 16,660.90

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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.