Home / 19,220.10-28,830.15-18,960.90

Finding the Fourth Proportional to 19,220.10, 28,830.15 and 18,960.90

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Solution

The fourth proportional to 19,220.10, 28,830.15 and 18,960.90 is: 28,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.10 : 28,830.15 = 18,960.90 : x
  2. Step 2: Convert to fraction form
    19,220.10/28,830.15 = 18,960.90/x
  3. Step 3: Cross multiply
    19,220.10x = 28,830.15 × 18,960.90
  4. Step 4: Simplify right side
    19,220.10x = 546,645,591.14
  5. Step 5: Solve for x
    x = 546,645,591.14/19,220.10
  6. Step 6: Final answer
    x = 28,441.35

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Similar ratio
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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.