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Finding the Fourth Proportional to 18,754.80, 25,881.84 and 10,371.12

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Solution

The fourth proportional to 18,754.80, 25,881.84 and 10,371.12 is: 14,312.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.80 : 25,881.84 = 10,371.12 : x
  2. Step 2: Convert to fraction form
    18,754.80/25,881.84 = 10,371.12/x
  3. Step 3: Cross multiply
    18,754.80x = 25,881.84 × 10,371.12
  4. Step 4: Simplify right side
    18,754.80x = 268,423,668.46
  5. Step 5: Solve for x
    x = 268,423,668.46/18,754.80
  6. Step 6: Final answer
    x = 14,312.27

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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.