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Finding the Fourth Proportional to 26,959.40, 40,440.30 and 9,189.80

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Solution

The fourth proportional to 26,959.40, 40,440.30 and 9,189.80 is: 13,785.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,959.40 : 40,440.30 = 9,189.80 : x
  2. Step 2: Convert to fraction form
    26,959.40/40,440.30 = 9,189.80/x
  3. Step 3: Cross multiply
    26,959.40x = 40,440.30 × 9,189.80
  4. Step 4: Simplify right side
    26,959.40x = 371,638,268.94
  5. Step 5: Solve for x
    x = 371,638,268.94/26,959.40
  6. Step 6: Final answer
    x = 13,785.11

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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.