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Finding the Fourth Proportional to 26,683.39, 36,826.29 and 15,505.39

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Solution

The fourth proportional to 26,683.39, 36,826.29 and 15,505.39 is: 21,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,683.39 : 36,826.29 = 15,505.39 : x
  2. Step 2: Convert to fraction form
    26,683.39/36,826.29 = 15,505.39/x
  3. Step 3: Cross multiply
    26,683.39x = 36,826.29 × 15,505.39
  4. Step 4: Simplify right side
    26,683.39x = 571,005,988.70
  5. Step 5: Solve for x
    x = 571,005,988.70/26,683.39
  6. Step 6: Final answer
    x = 21,399.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.