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Finding the Fourth Proportional to 13,648.17, 18,834.44 and 7,679.85

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Solution

The fourth proportional to 13,648.17, 18,834.44 and 7,679.85 is: 10,598.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,648.17 : 18,834.44 = 7,679.85 : x
  2. Step 2: Convert to fraction form
    13,648.17/18,834.44 = 7,679.85/x
  3. Step 3: Cross multiply
    13,648.17x = 18,834.44 × 7,679.85
  4. Step 4: Simplify right side
    13,648.17x = 144,645,674.03
  5. Step 5: Solve for x
    x = 144,645,674.03/13,648.17
  6. Step 6: Final answer
    x = 10,598.17

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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.