Home / 13,289.89-18,339.80-7,322.11

Finding the Fourth Proportional to 13,289.89, 18,339.80 and 7,322.11

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Solution

The fourth proportional to 13,289.89, 18,339.80 and 7,322.11 is: 10,104.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.89 : 18,339.80 = 7,322.11 : x
  2. Step 2: Convert to fraction form
    13,289.89/18,339.80 = 7,322.11/x
  3. Step 3: Cross multiply
    13,289.89x = 18,339.80 × 7,322.11
  4. Step 4: Simplify right side
    13,289.89x = 134,286,032.98
  5. Step 5: Solve for x
    x = 134,286,032.98/13,289.89
  6. Step 6: Final answer
    x = 10,104.38

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Similar ratio
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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.