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Finding the Fourth Proportional to 13,104.82, 18,085.07 and 7,439.82

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Solution

The fourth proportional to 13,104.82, 18,085.07 and 7,439.82 is: 10,267.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,104.82 : 18,085.07 = 7,439.82 : x
  2. Step 2: Convert to fraction form
    13,104.82/18,085.07 = 7,439.82/x
  3. Step 3: Cross multiply
    13,104.82x = 18,085.07 × 7,439.82
  4. Step 4: Simplify right side
    13,104.82x = 134,549,616.27
  5. Step 5: Solve for x
    x = 134,549,616.27/13,104.82
  6. Step 6: Final answer
    x = 10,267.18

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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.