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Finding the Fourth Proportional to 18,294.89, 27,443.95 and 5,147.37

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Solution

The fourth proportional to 18,294.89, 27,443.95 and 5,147.37 is: 7,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.89 : 27,443.95 = 5,147.37 : x
  2. Step 2: Convert to fraction form
    18,294.89/27,443.95 = 5,147.37/x
  3. Step 3: Cross multiply
    18,294.89x = 27,443.95 × 5,147.37
  4. Step 4: Simplify right side
    18,294.89x = 141,264,152.04
  5. Step 5: Solve for x
    x = 141,264,152.04/18,294.89
  6. Step 6: Final answer
    x = 7,721.51

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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.