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Finding the Fourth Proportional to 18,240.69, 25,173.69 and 10,284.57

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Solution

The fourth proportional to 18,240.69, 25,173.69 and 10,284.57 is: 14,193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,240.69 : 25,173.69 = 10,284.57 : x
  2. Step 2: Convert to fraction form
    18,240.69/25,173.69 = 10,284.57/x
  3. Step 3: Cross multiply
    18,240.69x = 25,173.69 × 10,284.57
  4. Step 4: Simplify right side
    18,240.69x = 258,900,538.40
  5. Step 5: Solve for x
    x = 258,900,538.40/18,240.69
  6. Step 6: Final answer
    x = 14,193.57

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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.