Home / 18,231.84-27,334.56-7,129.12

Finding the Fourth Proportional to 18,231.84, 27,334.56 and 7,129.12

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Solution

The fourth proportional to 18,231.84, 27,334.56 and 7,129.12 is: 10,688.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.84 : 27,334.56 = 7,129.12 : x
  2. Step 2: Convert to fraction form
    18,231.84/27,334.56 = 7,129.12/x
  3. Step 3: Cross multiply
    18,231.84x = 27,334.56 × 7,129.12
  4. Step 4: Simplify right side
    18,231.84x = 194,871,358.39
  5. Step 5: Solve for x
    x = 194,871,358.39/18,231.84
  6. Step 6: Final answer
    x = 10,688.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.