Home / 10,220.34-15,327.56-3,978.97

Finding the Fourth Proportional to 10,220.34, 15,327.56 and 3,978.97

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Solution

The fourth proportional to 10,220.34, 15,327.56 and 3,978.97 is: 5,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.34 : 15,327.56 = 3,978.97 : x
  2. Step 2: Convert to fraction form
    10,220.34/15,327.56 = 3,978.97/x
  3. Step 3: Cross multiply
    10,220.34x = 15,327.56 × 3,978.97
  4. Step 4: Simplify right side
    10,220.34x = 60,987,814.46
  5. Step 5: Solve for x
    x = 60,987,814.46/10,220.34
  6. Step 6: Final answer
    x = 5,967.30

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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.