Home / 28,759.27-43,118.89-12,740.11

Finding the Fourth Proportional to 28,759.27, 43,118.89 and 12,740.11

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Solution

The fourth proportional to 28,759.27, 43,118.89 and 12,740.11 is: 19,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.27 : 43,118.89 = 12,740.11 : x
  2. Step 2: Convert to fraction form
    28,759.27/43,118.89 = 12,740.11/x
  3. Step 3: Cross multiply
    28,759.27x = 43,118.89 × 12,740.11
  4. Step 4: Simplify right side
    28,759.27x = 549,339,401.68
  5. Step 5: Solve for x
    x = 549,339,401.68/28,759.27
  6. Step 6: Final answer
    x = 19,101.30

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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.