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Finding the Fourth Proportional to 12,398.54, 18,603.28 and 5,017.44

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Solution

The fourth proportional to 12,398.54, 18,603.28 and 5,017.44 is: 7,528.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.54 : 18,603.28 = 5,017.44 : x
  2. Step 2: Convert to fraction form
    12,398.54/18,603.28 = 5,017.44/x
  3. Step 3: Cross multiply
    12,398.54x = 18,603.28 × 5,017.44
  4. Step 4: Simplify right side
    12,398.54x = 93,340,841.20
  5. Step 5: Solve for x
    x = 93,340,841.20/12,398.54
  6. Step 6: Final answer
    x = 7,528.37

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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.