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Finding the Fourth Proportional to 13,754.49, 18,981.42 and 7,466.87

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Solution

The fourth proportional to 13,754.49, 18,981.42 and 7,466.87 is: 10,304.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.49 : 18,981.42 = 7,466.87 : x
  2. Step 2: Convert to fraction form
    13,754.49/18,981.42 = 7,466.87/x
  3. Step 3: Cross multiply
    13,754.49x = 18,981.42 × 7,466.87
  4. Step 4: Simplify right side
    13,754.49x = 141,731,700.65
  5. Step 5: Solve for x
    x = 141,731,700.65/13,754.49
  6. Step 6: Final answer
    x = 10,304.40

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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.