Home / 18,531.36-27,792.18-5,380.20

Finding the Fourth Proportional to 18,531.36, 27,792.18 and 5,380.20

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Solution

The fourth proportional to 18,531.36, 27,792.18 and 5,380.20 is: 8,068.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,531.36 : 27,792.18 = 5,380.20 : x
  2. Step 2: Convert to fraction form
    18,531.36/27,792.18 = 5,380.20/x
  3. Step 3: Cross multiply
    18,531.36x = 27,792.18 × 5,380.20
  4. Step 4: Simplify right side
    18,531.36x = 149,527,486.84
  5. Step 5: Solve for x
    x = 149,527,486.84/18,531.36
  6. Step 6: Final answer
    x = 8,068.89

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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.