Home / 18,810.90-28,227.29-7,725.54

Finding the Fourth Proportional to 18,810.90, 28,227.29 and 7,725.54

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Solution

The fourth proportional to 18,810.90, 28,227.29 and 7,725.54 is: 11,592.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.90 : 28,227.29 = 7,725.54 : x
  2. Step 2: Convert to fraction form
    18,810.90/28,227.29 = 7,725.54/x
  3. Step 3: Cross multiply
    18,810.90x = 28,227.29 × 7,725.54
  4. Step 4: Simplify right side
    18,810.90x = 218,071,125.21
  5. Step 5: Solve for x
    x = 218,071,125.21/18,810.90
  6. Step 6: Final answer
    x = 11,592.81

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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.