Home / 13,339.67-20,005.19-7,419.38

Finding the Fourth Proportional to 13,339.67, 20,005.19 and 7,419.38

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Solution

The fourth proportional to 13,339.67, 20,005.19 and 7,419.38 is: 11,126.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.67 : 20,005.19 = 7,419.38 : x
  2. Step 2: Convert to fraction form
    13,339.67/20,005.19 = 7,419.38/x
  3. Step 3: Cross multiply
    13,339.67x = 20,005.19 × 7,419.38
  4. Step 4: Simplify right side
    13,339.67x = 148,425,969.46
  5. Step 5: Solve for x
    x = 148,425,969.46/13,339.67
  6. Step 6: Final answer
    x = 11,126.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.