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Finding the Fourth Proportional to 18,235.29, 25,152.21 and 11,165.21

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Solution

The fourth proportional to 18,235.29, 25,152.21 and 11,165.21 is: 15,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.29 : 25,152.21 = 11,165.21 : x
  2. Step 2: Convert to fraction form
    18,235.29/25,152.21 = 11,165.21/x
  3. Step 3: Cross multiply
    18,235.29x = 25,152.21 × 11,165.21
  4. Step 4: Simplify right side
    18,235.29x = 280,829,706.61
  5. Step 5: Solve for x
    x = 280,829,706.61/18,235.29
  6. Step 6: Final answer
    x = 15,400.34

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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.