Home / 13,244.98-18,278.49-7,276.78

Finding the Fourth Proportional to 13,244.98, 18,278.49 and 7,276.78

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Solution

The fourth proportional to 13,244.98, 18,278.49 and 7,276.78 is: 10,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,244.98 : 18,278.49 = 7,276.78 : x
  2. Step 2: Convert to fraction form
    13,244.98/18,278.49 = 7,276.78/x
  3. Step 3: Cross multiply
    13,244.98x = 18,278.49 × 7,276.78
  4. Step 4: Simplify right side
    13,244.98x = 133,008,459.07
  5. Step 5: Solve for x
    x = 133,008,459.07/13,244.98
  6. Step 6: Final answer
    x = 10,042.18

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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.