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Finding the Fourth Proportional to 18,235.80, 25,166.16 and 11,160

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Solution

The fourth proportional to 18,235.80, 25,166.16 and 11,160 is: 15,401.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,235.80 : 25,166.16 = 11,160 : x
  2. Step 2: Convert to fraction form
    18,235.80/25,166.16 = 11,160/x
  3. Step 3: Cross multiply
    18,235.80x = 25,166.16 × 11,160
  4. Step 4: Simplify right side
    18,235.80x = 280,854,345.60
  5. Step 5: Solve for x
    x = 280,854,345.60/18,235.80
  6. Step 6: Final answer
    x = 15,401.26

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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.