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Finding the Fourth Proportional to 19,794.38, 29,686.38 and 7,317.98

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Solution

The fourth proportional to 19,794.38, 29,686.38 and 7,317.98 is: 10,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,794.38 : 29,686.38 = 7,317.98 : x
  2. Step 2: Convert to fraction form
    19,794.38/29,686.38 = 7,317.98/x
  3. Step 3: Cross multiply
    19,794.38x = 29,686.38 × 7,317.98
  4. Step 4: Simplify right side
    19,794.38x = 217,244,248.81
  5. Step 5: Solve for x
    x = 217,244,248.81/19,794.38
  6. Step 6: Final answer
    x = 10,975.04

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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.