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Finding the Fourth Proportional to 11,813.52, 17,720.42 and 5,058.20

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Solution

The fourth proportional to 11,813.52, 17,720.42 and 5,058.20 is: 7,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,813.52 : 17,720.42 = 5,058.20 : x
  2. Step 2: Convert to fraction form
    11,813.52/17,720.42 = 5,058.20/x
  3. Step 3: Cross multiply
    11,813.52x = 17,720.42 × 5,058.20
  4. Step 4: Simplify right side
    11,813.52x = 89,633,314.55
  5. Step 5: Solve for x
    x = 89,633,314.55/11,813.52
  6. Step 6: Final answer
    x = 7,587.35

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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.