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Finding the Fourth Proportional to 26,988.66, 40,485.90 and 10,362.78

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Solution

The fourth proportional to 26,988.66, 40,485.90 and 10,362.78 is: 15,545.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,988.66 : 40,485.90 = 10,362.78 : x
  2. Step 2: Convert to fraction form
    26,988.66/40,485.90 = 10,362.78/x
  3. Step 3: Cross multiply
    26,988.66x = 40,485.90 × 10,362.78
  4. Step 4: Simplify right side
    26,988.66x = 419,546,474.80
  5. Step 5: Solve for x
    x = 419,546,474.80/26,988.66
  6. Step 6: Final answer
    x = 15,545.29

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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.