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Finding the Fourth Proportional to 19,242.72, 28,863.60 and 13,005.60

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Solution

The fourth proportional to 19,242.72, 28,863.60 and 13,005.60 is: 19,508.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,242.72 : 28,863.60 = 13,005.60 : x
  2. Step 2: Convert to fraction form
    19,242.72/28,863.60 = 13,005.60/x
  3. Step 3: Cross multiply
    19,242.72x = 28,863.60 × 13,005.60
  4. Step 4: Simplify right side
    19,242.72x = 375,388,436.16
  5. Step 5: Solve for x
    x = 375,388,436.16/19,242.72
  6. Step 6: Final answer
    x = 19,508.08

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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.