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Finding the Fourth Proportional to 26,918.40, 40,377.84 and 9,388.20

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Solution

The fourth proportional to 26,918.40, 40,377.84 and 9,388.20 is: 14,082.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,918.40 : 40,377.84 = 9,388.20 : x
  2. Step 2: Convert to fraction form
    26,918.40/40,377.84 = 9,388.20/x
  3. Step 3: Cross multiply
    26,918.40x = 40,377.84 × 9,388.20
  4. Step 4: Simplify right side
    26,918.40x = 379,075,237.49
  5. Step 5: Solve for x
    x = 379,075,237.49/26,918.40
  6. Step 6: Final answer
    x = 14,082.38

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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.