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Finding the Fourth Proportional to 26,368.50, 36,379.95 and 18,415.11

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Solution

The fourth proportional to 26,368.50, 36,379.95 and 18,415.11 is: 25,406.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,368.50 : 36,379.95 = 18,415.11 : x
  2. Step 2: Convert to fraction form
    26,368.50/36,379.95 = 18,415.11/x
  3. Step 3: Cross multiply
    26,368.50x = 36,379.95 × 18,415.11
  4. Step 4: Simplify right side
    26,368.50x = 669,940,781.04
  5. Step 5: Solve for x
    x = 669,940,781.04/26,368.50
  6. Step 6: Final answer
    x = 25,406.86

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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.