Home / 13,263.29-18,298.64-8,222.30

Finding the Fourth Proportional to 13,263.29, 18,298.64 and 8,222.30

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Solution

The fourth proportional to 13,263.29, 18,298.64 and 8,222.30 is: 11,343.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.29 : 18,298.64 = 8,222.30 : x
  2. Step 2: Convert to fraction form
    13,263.29/18,298.64 = 8,222.30/x
  3. Step 3: Cross multiply
    13,263.29x = 18,298.64 × 8,222.30
  4. Step 4: Simplify right side
    13,263.29x = 150,456,866.56
  5. Step 5: Solve for x
    x = 150,456,866.56/13,263.29
  6. Step 6: Final answer
    x = 11,343.86

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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.