Home / 19,685.55-27,165.02-11,186.53

Finding the Fourth Proportional to 19,685.55, 27,165.02 and 11,186.53

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Solution

The fourth proportional to 19,685.55, 27,165.02 and 11,186.53 is: 15,436.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.55 : 27,165.02 = 11,186.53 : x
  2. Step 2: Convert to fraction form
    19,685.55/27,165.02 = 11,186.53/x
  3. Step 3: Cross multiply
    19,685.55x = 27,165.02 × 11,186.53
  4. Step 4: Simplify right side
    19,685.55x = 303,882,311.18
  5. Step 5: Solve for x
    x = 303,882,311.18/19,685.55
  6. Step 6: Final answer
    x = 15,436.82

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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.