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Finding the Fourth Proportional to 18,479.96, 27,719.96 and 4,628.96

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Solution

The fourth proportional to 18,479.96, 27,719.96 and 4,628.96 is: 6,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.96 : 27,719.96 = 4,628.96 : x
  2. Step 2: Convert to fraction form
    18,479.96/27,719.96 = 4,628.96/x
  3. Step 3: Cross multiply
    18,479.96x = 27,719.96 × 4,628.96
  4. Step 4: Simplify right side
    18,479.96x = 128,314,586.04
  5. Step 5: Solve for x
    x = 128,314,586.04/18,479.96
  6. Step 6: Final answer
    x = 6,943.45

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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.