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Finding the Fourth Proportional to 12,152.34, 18,228.51 and 2,918.34

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Solution

The fourth proportional to 12,152.34, 18,228.51 and 2,918.34 is: 4,377.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,152.34 : 18,228.51 = 2,918.34 : x
  2. Step 2: Convert to fraction form
    12,152.34/18,228.51 = 2,918.34/x
  3. Step 3: Cross multiply
    12,152.34x = 18,228.51 × 2,918.34
  4. Step 4: Simplify right side
    12,152.34x = 53,196,989.87
  5. Step 5: Solve for x
    x = 53,196,989.87/12,152.34
  6. Step 6: Final answer
    x = 4,377.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.