Home / 17,385.12-26,019.36-11,815.56

Finding the Fourth Proportional to 17,385.12, 26,019.36 and 11,815.56

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Solution

The fourth proportional to 17,385.12, 26,019.36 and 11,815.56 is: 17,683.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,385.12 : 26,019.36 = 11,815.56 : x
  2. Step 2: Convert to fraction form
    17,385.12/26,019.36 = 11,815.56/x
  3. Step 3: Cross multiply
    17,385.12x = 26,019.36 × 11,815.56
  4. Step 4: Simplify right side
    17,385.12x = 307,433,309.24
  5. Step 5: Solve for x
    x = 307,433,309.24/17,385.12
  6. Step 6: Final answer
    x = 17,683.70

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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.