Home / 13,825.76-19,079.82-7,538.13

Finding the Fourth Proportional to 13,825.76, 19,079.82 and 7,538.13

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Solution

The fourth proportional to 13,825.76, 19,079.82 and 7,538.13 is: 10,402.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.76 : 19,079.82 = 7,538.13 : x
  2. Step 2: Convert to fraction form
    13,825.76/19,079.82 = 7,538.13/x
  3. Step 3: Cross multiply
    13,825.76x = 19,079.82 × 7,538.13
  4. Step 4: Simplify right side
    13,825.76x = 143,826,163.54
  5. Step 5: Solve for x
    x = 143,826,163.54/13,825.76
  6. Step 6: Final answer
    x = 10,402.77

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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.