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Finding the Fourth Proportional to 19,579.50, 29,369.34 and 5,728.50

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Solution

The fourth proportional to 19,579.50, 29,369.34 and 5,728.50 is: 8,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.50 : 29,369.34 = 5,728.50 : x
  2. Step 2: Convert to fraction form
    19,579.50/29,369.34 = 5,728.50/x
  3. Step 3: Cross multiply
    19,579.50x = 29,369.34 × 5,728.50
  4. Step 4: Simplify right side
    19,579.50x = 168,242,264.19
  5. Step 5: Solve for x
    x = 168,242,264.19/19,579.50
  6. Step 6: Final answer
    x = 8,592.78

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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.