Home / 13,299.30-18,353.42-7,331.36

Finding the Fourth Proportional to 13,299.30, 18,353.42 and 7,331.36

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Solution

The fourth proportional to 13,299.30, 18,353.42 and 7,331.36 is: 10,117.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.30 : 18,353.42 = 7,331.36 : x
  2. Step 2: Convert to fraction form
    13,299.30/18,353.42 = 7,331.36/x
  3. Step 3: Cross multiply
    13,299.30x = 18,353.42 × 7,331.36
  4. Step 4: Simplify right side
    13,299.30x = 134,555,529.25
  5. Step 5: Solve for x
    x = 134,555,529.25/13,299.30
  6. Step 6: Final answer
    x = 10,117.49

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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.