Home / 28,885.92-43,314.12-13,290

Finding the Fourth Proportional to 28,885.92, 43,314.12 and 13,290

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Solution

The fourth proportional to 28,885.92, 43,314.12 and 13,290 is: 19,928.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.92 : 43,314.12 = 13,290 : x
  2. Step 2: Convert to fraction form
    28,885.92/43,314.12 = 13,290/x
  3. Step 3: Cross multiply
    28,885.92x = 43,314.12 × 13,290
  4. Step 4: Simplify right side
    28,885.92x = 575,644,654.80
  5. Step 5: Solve for x
    x = 575,644,654.80/28,885.92
  6. Step 6: Final answer
    x = 19,928.21

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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.