Home / 12,135.53-16,740.61-8,352.13

Finding the Fourth Proportional to 12,135.53, 16,740.61 and 8,352.13

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Solution

The fourth proportional to 12,135.53, 16,740.61 and 8,352.13 is: 11,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,135.53 : 16,740.61 = 8,352.13 : x
  2. Step 2: Convert to fraction form
    12,135.53/16,740.61 = 8,352.13/x
  3. Step 3: Cross multiply
    12,135.53x = 16,740.61 × 8,352.13
  4. Step 4: Simplify right side
    12,135.53x = 139,819,625.54
  5. Step 5: Solve for x
    x = 139,819,625.54/12,135.53
  6. Step 6: Final answer
    x = 11,521.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.