Home / 17,972.80-26,959.20-11,379.40

Finding the Fourth Proportional to 17,972.80, 26,959.20 and 11,379.40

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Solution

The fourth proportional to 17,972.80, 26,959.20 and 11,379.40 is: 17,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,972.80 : 26,959.20 = 11,379.40 : x
  2. Step 2: Convert to fraction form
    17,972.80/26,959.20 = 11,379.40/x
  3. Step 3: Cross multiply
    17,972.80x = 26,959.20 × 11,379.40
  4. Step 4: Simplify right side
    17,972.80x = 306,779,520.48
  5. Step 5: Solve for x
    x = 306,779,520.48/17,972.80
  6. Step 6: Final answer
    x = 17,069.10

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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.