Home / 10,220.16-15,334.59-3,984.56

Finding the Fourth Proportional to 10,220.16, 15,334.59 and 3,984.56

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Solution

The fourth proportional to 10,220.16, 15,334.59 and 3,984.56 is: 5,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.16 : 15,334.59 = 3,984.56 : x
  2. Step 2: Convert to fraction form
    10,220.16/15,334.59 = 3,984.56/x
  3. Step 3: Cross multiply
    10,220.16x = 15,334.59 × 3,984.56
  4. Step 4: Simplify right side
    10,220.16x = 61,101,593.93
  5. Step 5: Solve for x
    x = 61,101,593.93/10,220.16
  6. Step 6: Final answer
    x = 5,978.54

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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.