Home / 19,331.25-28,997.14-5,480.25

Finding the Fourth Proportional to 19,331.25, 28,997.14 and 5,480.25

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Solution

The fourth proportional to 19,331.25, 28,997.14 and 5,480.25 is: 8,220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,331.25 : 28,997.14 = 5,480.25 : x
  2. Step 2: Convert to fraction form
    19,331.25/28,997.14 = 5,480.25/x
  3. Step 3: Cross multiply
    19,331.25x = 28,997.14 × 5,480.25
  4. Step 4: Simplify right side
    19,331.25x = 158,911,576.49
  5. Step 5: Solve for x
    x = 158,911,576.49/19,331.25
  6. Step 6: Final answer
    x = 8,220.45

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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.