Home / 17,515.16-26,288.50-11,879.20

Finding the Fourth Proportional to 17,515.16, 26,288.50 and 11,879.20

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Solution

The fourth proportional to 17,515.16, 26,288.50 and 11,879.20 is: 17,829.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,515.16 : 26,288.50 = 11,879.20 : x
  2. Step 2: Convert to fraction form
    17,515.16/26,288.50 = 11,879.20/x
  3. Step 3: Cross multiply
    17,515.16x = 26,288.50 × 11,879.20
  4. Step 4: Simplify right side
    17,515.16x = 312,286,349.20
  5. Step 5: Solve for x
    x = 312,286,349.20/17,515.16
  6. Step 6: Final answer
    x = 17,829.49

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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.