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Finding the Fourth Proportional to 18,219.01, 27,328.52 and 10,422.36

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Solution

The fourth proportional to 18,219.01, 27,328.52 and 10,422.36 is: 15,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.01 : 27,328.52 = 10,422.36 : x
  2. Step 2: Convert to fraction form
    18,219.01/27,328.52 = 10,422.36/x
  3. Step 3: Cross multiply
    18,219.01x = 27,328.52 × 10,422.36
  4. Step 4: Simplify right side
    18,219.01x = 284,827,484.95
  5. Step 5: Solve for x
    x = 284,827,484.95/18,219.01
  6. Step 6: Final answer
    x = 15,633.53

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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.