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Finding the Fourth Proportional to 13,603.84, 20,400.96 and 4,837.12

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Solution

The fourth proportional to 13,603.84, 20,400.96 and 4,837.12 is: 7,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.84 : 20,400.96 = 4,837.12 : x
  2. Step 2: Convert to fraction form
    13,603.84/20,400.96 = 4,837.12/x
  3. Step 3: Cross multiply
    13,603.84x = 20,400.96 × 4,837.12
  4. Step 4: Simplify right side
    13,603.84x = 98,681,891.64
  5. Step 5: Solve for x
    x = 98,681,891.64/13,603.84
  6. Step 6: Final answer
    x = 7,253.97

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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.