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Finding the Fourth Proportional to 19,803.13, 29,705.07 and 7,316.71

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Solution

The fourth proportional to 19,803.13, 29,705.07 and 7,316.71 is: 10,975.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,803.13 : 29,705.07 = 7,316.71 : x
  2. Step 2: Convert to fraction form
    19,803.13/29,705.07 = 7,316.71/x
  3. Step 3: Cross multiply
    19,803.13x = 29,705.07 × 7,316.71
  4. Step 4: Simplify right side
    19,803.13x = 217,343,234.19
  5. Step 5: Solve for x
    x = 217,343,234.19/19,803.13
  6. Step 6: Final answer
    x = 10,975.20

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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.