Home / 27,017.90-40,508.40-12,218.75

Finding the Fourth Proportional to 27,017.90, 40,508.40 and 12,218.75

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Solution

The fourth proportional to 27,017.90, 40,508.40 and 12,218.75 is: 18,319.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,017.90 : 40,508.40 = 12,218.75 : x
  2. Step 2: Convert to fraction form
    27,017.90/40,508.40 = 12,218.75/x
  3. Step 3: Cross multiply
    27,017.90x = 40,508.40 × 12,218.75
  4. Step 4: Simplify right side
    27,017.90x = 494,962,012.50
  5. Step 5: Solve for x
    x = 494,962,012.50/27,017.90
  6. Step 6: Final answer
    x = 18,319.78

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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.