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Finding the Fourth Proportional to 18,817.68, 25,965 and 10,860.24

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Solution

The fourth proportional to 18,817.68, 25,965 and 10,860.24 is: 14,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.68 : 25,965 = 10,860.24 : x
  2. Step 2: Convert to fraction form
    18,817.68/25,965 = 10,860.24/x
  3. Step 3: Cross multiply
    18,817.68x = 25,965 × 10,860.24
  4. Step 4: Simplify right side
    18,817.68x = 281,986,131.60
  5. Step 5: Solve for x
    x = 281,986,131.60/18,817.68
  6. Step 6: Final answer
    x = 14,985.17

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Half scale
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Double scale
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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.