Home / 19,210.43-28,815.65-5,170.49

Finding the Fourth Proportional to 19,210.43, 28,815.65 and 5,170.49

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Solution

The fourth proportional to 19,210.43, 28,815.65 and 5,170.49 is: 7,755.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.43 : 28,815.65 = 5,170.49 : x
  2. Step 2: Convert to fraction form
    19,210.43/28,815.65 = 5,170.49/x
  3. Step 3: Cross multiply
    19,210.43x = 28,815.65 × 5,170.49
  4. Step 4: Simplify right side
    19,210.43x = 148,991,115.13
  5. Step 5: Solve for x
    x = 148,991,115.13/19,210.43
  6. Step 6: Final answer
    x = 7,755.74

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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.