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Finding the Fourth Proportional to 18,642.74, 27,963.18 and 6,955.05

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Solution

The fourth proportional to 18,642.74, 27,963.18 and 6,955.05 is: 10,432.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.74 : 27,963.18 = 6,955.05 : x
  2. Step 2: Convert to fraction form
    18,642.74/27,963.18 = 6,955.05/x
  3. Step 3: Cross multiply
    18,642.74x = 27,963.18 × 6,955.05
  4. Step 4: Simplify right side
    18,642.74x = 194,485,315.06
  5. Step 5: Solve for x
    x = 194,485,315.06/18,642.74
  6. Step 6: Final answer
    x = 10,432.23

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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.