Home / 13,135.96-18,127.57-7,167.58

Finding the Fourth Proportional to 13,135.96, 18,127.57 and 7,167.58

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Solution

The fourth proportional to 13,135.96, 18,127.57 and 7,167.58 is: 9,891.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.96 : 18,127.57 = 7,167.58 : x
  2. Step 2: Convert to fraction form
    13,135.96/18,127.57 = 7,167.58/x
  3. Step 3: Cross multiply
    13,135.96x = 18,127.57 × 7,167.58
  4. Step 4: Simplify right side
    13,135.96x = 129,930,808.18
  5. Step 5: Solve for x
    x = 129,930,808.18/13,135.96
  6. Step 6: Final answer
    x = 9,891.23

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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.