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Finding the Fourth Proportional to 13,658.82, 20,488.01 and 4,424.82

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Solution

The fourth proportional to 13,658.82, 20,488.01 and 4,424.82 is: 6,637.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.82 : 20,488.01 = 4,424.82 : x
  2. Step 2: Convert to fraction form
    13,658.82/20,488.01 = 4,424.82/x
  3. Step 3: Cross multiply
    13,658.82x = 20,488.01 × 4,424.82
  4. Step 4: Simplify right side
    13,658.82x = 90,655,734.28
  5. Step 5: Solve for x
    x = 90,655,734.28/13,658.82
  6. Step 6: Final answer
    x = 6,637.16

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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.