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Finding the Fourth Proportional to 13,754.79, 18,981.65 and 7,467.16

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Solution

The fourth proportional to 13,754.79, 18,981.65 and 7,467.16 is: 10,304.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.79 : 18,981.65 = 7,467.16 : x
  2. Step 2: Convert to fraction form
    13,754.79/18,981.65 = 7,467.16/x
  3. Step 3: Cross multiply
    13,754.79x = 18,981.65 × 7,467.16
  4. Step 4: Simplify right side
    13,754.79x = 141,739,017.61
  5. Step 5: Solve for x
    x = 141,739,017.61/13,754.79
  6. Step 6: Final answer
    x = 10,304.70

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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.