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Finding the Fourth Proportional to 13,483, 20,228.49 and 6,913.80

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Solution

The fourth proportional to 13,483, 20,228.49 and 6,913.80 is: 10,372.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483 : 20,228.49 = 6,913.80 : x
  2. Step 2: Convert to fraction form
    13,483/20,228.49 = 6,913.80/x
  3. Step 3: Cross multiply
    13,483x = 20,228.49 × 6,913.80
  4. Step 4: Simplify right side
    13,483x = 139,855,734.16
  5. Step 5: Solve for x
    x = 139,855,734.16/13,483
  6. Step 6: Final answer
    x = 10,372.75

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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.