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Finding the Fourth Proportional to 19,387.62, 29,024.02 and 11,968.22

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Solution

The fourth proportional to 19,387.62, 29,024.02 and 11,968.22 is: 17,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,387.62 : 29,024.02 = 11,968.22 : x
  2. Step 2: Convert to fraction form
    19,387.62/29,024.02 = 11,968.22/x
  3. Step 3: Cross multiply
    19,387.62x = 29,024.02 × 11,968.22
  4. Step 4: Simplify right side
    19,387.62x = 347,365,944.16
  5. Step 5: Solve for x
    x = 347,365,944.16/19,387.62
  6. Step 6: Final answer
    x = 17,916.89

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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.