Home / 13,135.32-18,126.46-7,167.16

Finding the Fourth Proportional to 13,135.32, 18,126.46 and 7,167.16

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Solution

The fourth proportional to 13,135.32, 18,126.46 and 7,167.16 is: 9,890.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.32 : 18,126.46 = 7,167.16 : x
  2. Step 2: Convert to fraction form
    13,135.32/18,126.46 = 7,167.16/x
  3. Step 3: Cross multiply
    13,135.32x = 18,126.46 × 7,167.16
  4. Step 4: Simplify right side
    13,135.32x = 129,915,239.05
  5. Step 5: Solve for x
    x = 129,915,239.05/13,135.32
  6. Step 6: Final answer
    x = 9,890.53

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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.