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Finding the Fourth Proportional to 13,058.92, 18,019.56 and 8,339.86

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Solution

The fourth proportional to 13,058.92, 18,019.56 and 8,339.86 is: 11,507.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.92 : 18,019.56 = 8,339.86 : x
  2. Step 2: Convert to fraction form
    13,058.92/18,019.56 = 8,339.86/x
  3. Step 3: Cross multiply
    13,058.92x = 18,019.56 × 8,339.86
  4. Step 4: Simplify right side
    13,058.92x = 150,280,607.66
  5. Step 5: Solve for x
    x = 150,280,607.66/13,058.92
  6. Step 6: Final answer
    x = 11,507.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.