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Finding the Fourth Proportional to 13,058.66, 18,012.02 and 8,340.86

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Solution

The fourth proportional to 13,058.66, 18,012.02 and 8,340.86 is: 11,504.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,058.66 : 18,012.02 = 8,340.86 : x
  2. Step 2: Convert to fraction form
    13,058.66/18,012.02 = 8,340.86/x
  3. Step 3: Cross multiply
    13,058.66x = 18,012.02 × 8,340.86
  4. Step 4: Simplify right side
    13,058.66x = 150,235,737.14
  5. Step 5: Solve for x
    x = 150,235,737.14/13,058.66
  6. Step 6: Final answer
    x = 11,504.68

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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.