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Finding the Fourth Proportional to 26,715.70, 40,070.02 and 11,921.19

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Solution

The fourth proportional to 26,715.70, 40,070.02 and 11,921.19 is: 17,880.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,715.70 : 40,070.02 = 11,921.19 : x
  2. Step 2: Convert to fraction form
    26,715.70/40,070.02 = 11,921.19/x
  3. Step 3: Cross multiply
    26,715.70x = 40,070.02 × 11,921.19
  4. Step 4: Simplify right side
    26,715.70x = 477,682,321.72
  5. Step 5: Solve for x
    x = 477,682,321.72/26,715.70
  6. Step 6: Final answer
    x = 17,880.21

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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.