Home / 26,861.40-40,253.70-18,643.80

Finding the Fourth Proportional to 26,861.40, 40,253.70 and 18,643.80

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Solution

The fourth proportional to 26,861.40, 40,253.70 and 18,643.80 is: 27,939.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,861.40 : 40,253.70 = 18,643.80 : x
  2. Step 2: Convert to fraction form
    26,861.40/40,253.70 = 18,643.80/x
  3. Step 3: Cross multiply
    26,861.40x = 40,253.70 × 18,643.80
  4. Step 4: Simplify right side
    26,861.40x = 750,481,932.06
  5. Step 5: Solve for x
    x = 750,481,932.06/26,861.40
  6. Step 6: Final answer
    x = 27,939.05

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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.