Home / 19,165.68-28,716.06-12,153.60

Finding the Fourth Proportional to 19,165.68, 28,716.06 and 12,153.60

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Solution

The fourth proportional to 19,165.68, 28,716.06 and 12,153.60 is: 18,209.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,165.68 : 28,716.06 = 12,153.60 : x
  2. Step 2: Convert to fraction form
    19,165.68/28,716.06 = 12,153.60/x
  3. Step 3: Cross multiply
    19,165.68x = 28,716.06 × 12,153.60
  4. Step 4: Simplify right side
    19,165.68x = 349,003,506.82
  5. Step 5: Solve for x
    x = 349,003,506.82/19,165.68
  6. Step 6: Final answer
    x = 18,209.82

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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.