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Finding the Fourth Proportional to 13,598.55, 20,391.01 and 6,578.98

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Solution

The fourth proportional to 13,598.55, 20,391.01 and 6,578.98 is: 9,865.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598.55 : 20,391.01 = 6,578.98 : x
  2. Step 2: Convert to fraction form
    13,598.55/20,391.01 = 6,578.98/x
  3. Step 3: Cross multiply
    13,598.55x = 20,391.01 × 6,578.98
  4. Step 4: Simplify right side
    13,598.55x = 134,151,979.54
  5. Step 5: Solve for x
    x = 134,151,979.54/13,598.55
  6. Step 6: Final answer
    x = 9,865.17

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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.