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Finding the Fourth Proportional to 27,287.80, 40,931.70 and 26,380.60

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Solution

The fourth proportional to 27,287.80, 40,931.70 and 26,380.60 is: 39,570.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287.80 : 40,931.70 = 26,380.60 : x
  2. Step 2: Convert to fraction form
    27,287.80/40,931.70 = 26,380.60/x
  3. Step 3: Cross multiply
    27,287.80x = 40,931.70 × 26,380.60
  4. Step 4: Simplify right side
    27,287.80x = 1,079,802,805.02
  5. Step 5: Solve for x
    x = 1,079,802,805.02/27,287.80
  6. Step 6: Final answer
    x = 39,570.90

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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.