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Finding the Fourth Proportional to 26,672.70, 39,972.60 and 17,762.70

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Solution

The fourth proportional to 26,672.70, 39,972.60 and 17,762.70 is: 26,619.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,672.70 : 39,972.60 = 17,762.70 : x
  2. Step 2: Convert to fraction form
    26,672.70/39,972.60 = 17,762.70/x
  3. Step 3: Cross multiply
    26,672.70x = 39,972.60 × 17,762.70
  4. Step 4: Simplify right side
    26,672.70x = 710,021,302.02
  5. Step 5: Solve for x
    x = 710,021,302.02/26,672.70
  6. Step 6: Final answer
    x = 26,619.78

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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.