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Finding the Fourth Proportional to 13,296.88, 18,349.49 and 7,328.39

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Solution

The fourth proportional to 13,296.88, 18,349.49 and 7,328.39 is: 10,113.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,296.88 : 18,349.49 = 7,328.39 : x
  2. Step 2: Convert to fraction form
    13,296.88/18,349.49 = 7,328.39/x
  3. Step 3: Cross multiply
    13,296.88x = 18,349.49 × 7,328.39
  4. Step 4: Simplify right side
    13,296.88x = 134,472,182.38
  5. Step 5: Solve for x
    x = 134,472,182.38/13,296.88
  6. Step 6: Final answer
    x = 10,113.07

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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.