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Finding the Fourth Proportional to 13,296.10, 18,347.16 and 7,629.34

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Solution

The fourth proportional to 13,296.10, 18,347.16 and 7,629.34 is: 10,527.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.10 : 18,347.16 = 7,629.34 : x
  2. Step 2: Convert to fraction form
    13,296.10/18,347.16 = 7,629.34/x
  3. Step 3: Cross multiply
    13,296.10x = 18,347.16 × 7,629.34
  4. Step 4: Simplify right side
    13,296.10x = 139,976,721.67
  5. Step 5: Solve for x
    x = 139,976,721.67/13,296.10
  6. Step 6: Final answer
    x = 10,527.65

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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.