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Finding the Fourth Proportional to 19,266.40, 28,899.60 and 18,027.10

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Solution

The fourth proportional to 19,266.40, 28,899.60 and 18,027.10 is: 27,040.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,266.40 : 28,899.60 = 18,027.10 : x
  2. Step 2: Convert to fraction form
    19,266.40/28,899.60 = 18,027.10/x
  3. Step 3: Cross multiply
    19,266.40x = 28,899.60 × 18,027.10
  4. Step 4: Simplify right side
    19,266.40x = 520,975,979.16
  5. Step 5: Solve for x
    x = 520,975,979.16/19,266.40
  6. Step 6: Final answer
    x = 27,040.65

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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.