Home / 26,311.90-39,455.70-11,513.20

Finding the Fourth Proportional to 26,311.90, 39,455.70 and 11,513.20

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Solution

The fourth proportional to 26,311.90, 39,455.70 and 11,513.20 is: 17,264.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,311.90 : 39,455.70 = 11,513.20 : x
  2. Step 2: Convert to fraction form
    26,311.90/39,455.70 = 11,513.20/x
  3. Step 3: Cross multiply
    26,311.90x = 39,455.70 × 11,513.20
  4. Step 4: Simplify right side
    26,311.90x = 454,261,365.24
  5. Step 5: Solve for x
    x = 454,261,365.24/26,311.90
  6. Step 6: Final answer
    x = 17,264.48

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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.