Home / 18,975.43-28,466.19-7,130.09

Finding the Fourth Proportional to 18,975.43, 28,466.19 and 7,130.09

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Solution

The fourth proportional to 18,975.43, 28,466.19 and 7,130.09 is: 10,696.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.43 : 28,466.19 = 7,130.09 : x
  2. Step 2: Convert to fraction form
    18,975.43/28,466.19 = 7,130.09/x
  3. Step 3: Cross multiply
    18,975.43x = 28,466.19 × 7,130.09
  4. Step 4: Simplify right side
    18,975.43x = 202,966,496.66
  5. Step 5: Solve for x
    x = 202,966,496.66/18,975.43
  6. Step 6: Final answer
    x = 10,696.28

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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.