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Finding the Fourth Proportional to 13,658.84, 20,490.98 and 4,301.21

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Solution

The fourth proportional to 13,658.84, 20,490.98 and 4,301.21 is: 6,452.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,658.84 : 20,490.98 = 4,301.21 : x
  2. Step 2: Convert to fraction form
    13,658.84/20,490.98 = 4,301.21/x
  3. Step 3: Cross multiply
    13,658.84x = 20,490.98 × 4,301.21
  4. Step 4: Simplify right side
    13,658.84x = 88,136,037.81
  5. Step 5: Solve for x
    x = 88,136,037.81/13,658.84
  6. Step 6: Final answer
    x = 6,452.68

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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.