Home / 13,142.07-18,135.42-7,476.28

Finding the Fourth Proportional to 13,142.07, 18,135.42 and 7,476.28

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Solution

The fourth proportional to 13,142.07, 18,135.42 and 7,476.28 is: 10,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.07 : 18,135.42 = 7,476.28 : x
  2. Step 2: Convert to fraction form
    13,142.07/18,135.42 = 7,476.28/x
  3. Step 3: Cross multiply
    13,142.07x = 18,135.42 × 7,476.28
  4. Step 4: Simplify right side
    13,142.07x = 135,585,459.15
  5. Step 5: Solve for x
    x = 135,585,459.15/13,142.07
  6. Step 6: Final answer
    x = 10,316.90

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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.