Home / 20,499.03-28,283.45-12,538.35

Finding the Fourth Proportional to 20,499.03, 28,283.45 and 12,538.35

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Solution

The fourth proportional to 20,499.03, 28,283.45 and 12,538.35 is: 17,299.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.03 : 28,283.45 = 12,538.35 : x
  2. Step 2: Convert to fraction form
    20,499.03/28,283.45 = 12,538.35/x
  3. Step 3: Cross multiply
    20,499.03x = 28,283.45 × 12,538.35
  4. Step 4: Simplify right side
    20,499.03x = 354,627,732.62
  5. Step 5: Solve for x
    x = 354,627,732.62/20,499.03
  6. Step 6: Final answer
    x = 17,299.73

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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.