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Finding the Fourth Proportional to 18,362, 25,341.72 and 10,910

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Solution

The fourth proportional to 18,362, 25,341.72 and 10,910 is: 15,057.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362 : 25,341.72 = 10,910 : x
  2. Step 2: Convert to fraction form
    18,362/25,341.72 = 10,910/x
  3. Step 3: Cross multiply
    18,362x = 25,341.72 × 10,910
  4. Step 4: Simplify right side
    18,362x = 276,478,165.20
  5. Step 5: Solve for x
    x = 276,478,165.20/18,362
  6. Step 6: Final answer
    x = 15,057.08

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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.