Home / 28,512.50-42,745.68-11,885.06

Finding the Fourth Proportional to 28,512.50, 42,745.68 and 11,885.06

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Solution

The fourth proportional to 28,512.50, 42,745.68 and 11,885.06 is: 17,817.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.50 : 42,745.68 = 11,885.06 : x
  2. Step 2: Convert to fraction form
    28,512.50/42,745.68 = 11,885.06/x
  3. Step 3: Cross multiply
    28,512.50x = 42,745.68 × 11,885.06
  4. Step 4: Simplify right side
    28,512.50x = 508,034,971.54
  5. Step 5: Solve for x
    x = 508,034,971.54/28,512.50
  6. Step 6: Final answer
    x = 17,817.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.