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Finding the Fourth Proportional to 18,363.16, 25,341.42 and 11,287

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Solution

The fourth proportional to 18,363.16, 25,341.42 and 11,287 is: 15,576.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.16 : 25,341.42 = 11,287 : x
  2. Step 2: Convert to fraction form
    18,363.16/25,341.42 = 11,287/x
  3. Step 3: Cross multiply
    18,363.16x = 25,341.42 × 11,287
  4. Step 4: Simplify right side
    18,363.16x = 286,028,607.54
  5. Step 5: Solve for x
    x = 286,028,607.54/18,363.16
  6. Step 6: Final answer
    x = 15,576.22

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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.