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Finding the Fourth Proportional to 18,719.16, 28,069.34 and 6,234.79

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Solution

The fourth proportional to 18,719.16, 28,069.34 and 6,234.79 is: 9,349.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.16 : 28,069.34 = 6,234.79 : x
  2. Step 2: Convert to fraction form
    18,719.16/28,069.34 = 6,234.79/x
  3. Step 3: Cross multiply
    18,719.16x = 28,069.34 × 6,234.79
  4. Step 4: Simplify right side
    18,719.16x = 175,006,440.34
  5. Step 5: Solve for x
    x = 175,006,440.34/18,719.16
  6. Step 6: Final answer
    x = 9,349.06

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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.