Home / 13,387.88-18,475.68-7,338.52

Finding the Fourth Proportional to 13,387.88, 18,475.68 and 7,338.52

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Solution

The fourth proportional to 13,387.88, 18,475.68 and 7,338.52 is: 10,127.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.88 : 18,475.68 = 7,338.52 : x
  2. Step 2: Convert to fraction form
    13,387.88/18,475.68 = 7,338.52/x
  3. Step 3: Cross multiply
    13,387.88x = 18,475.68 × 7,338.52
  4. Step 4: Simplify right side
    13,387.88x = 135,584,147.19
  5. Step 5: Solve for x
    x = 135,584,147.19/13,387.88
  6. Step 6: Final answer
    x = 10,127.38

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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.