Home / 17,640.20-26,460.30-10,987.40

Finding the Fourth Proportional to 17,640.20, 26,460.30 and 10,987.40

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Solution

The fourth proportional to 17,640.20, 26,460.30 and 10,987.40 is: 16,481.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.20 : 26,460.30 = 10,987.40 : x
  2. Step 2: Convert to fraction form
    17,640.20/26,460.30 = 10,987.40/x
  3. Step 3: Cross multiply
    17,640.20x = 26,460.30 × 10,987.40
  4. Step 4: Simplify right side
    17,640.20x = 290,729,900.22
  5. Step 5: Solve for x
    x = 290,729,900.22/17,640.20
  6. Step 6: Final answer
    x = 16,481.10

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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.