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Finding the Fourth Proportional to 13,398.21, 20,097.59 and 7,554.65

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Solution

The fourth proportional to 13,398.21, 20,097.59 and 7,554.65 is: 11,332.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.21 : 20,097.59 = 7,554.65 : x
  2. Step 2: Convert to fraction form
    13,398.21/20,097.59 = 7,554.65/x
  3. Step 3: Cross multiply
    13,398.21x = 20,097.59 × 7,554.65
  4. Step 4: Simplify right side
    13,398.21x = 151,830,120.03
  5. Step 5: Solve for x
    x = 151,830,120.03/13,398.21
  6. Step 6: Final answer
    x = 11,332.12

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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.