Home / 19,071.18-28,608.39-5,220.18

Finding the Fourth Proportional to 19,071.18, 28,608.39 and 5,220.18

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Solution

The fourth proportional to 19,071.18, 28,608.39 and 5,220.18 is: 7,830.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,071.18 : 28,608.39 = 5,220.18 : x
  2. Step 2: Convert to fraction form
    19,071.18/28,608.39 = 5,220.18/x
  3. Step 3: Cross multiply
    19,071.18x = 28,608.39 × 5,220.18
  4. Step 4: Simplify right side
    19,071.18x = 149,340,945.31
  5. Step 5: Solve for x
    x = 149,340,945.31/19,071.18
  6. Step 6: Final answer
    x = 7,830.71

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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.