Home / 19,220.51-28,822.12-8,121.49

Finding the Fourth Proportional to 19,220.51, 28,822.12 and 8,121.49

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Solution

The fourth proportional to 19,220.51, 28,822.12 and 8,121.49 is: 12,178.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.51 : 28,822.12 = 8,121.49 : x
  2. Step 2: Convert to fraction form
    19,220.51/28,822.12 = 8,121.49/x
  3. Step 3: Cross multiply
    19,220.51x = 28,822.12 × 8,121.49
  4. Step 4: Simplify right side
    19,220.51x = 234,078,467.00
  5. Step 5: Solve for x
    x = 234,078,467.00/19,220.51
  6. Step 6: Final answer
    x = 12,178.58

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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.