Home / 18,971.43-28,460.19-7,126.09

Finding the Fourth Proportional to 18,971.43, 28,460.19 and 7,126.09

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Solution

The fourth proportional to 18,971.43, 28,460.19 and 7,126.09 is: 10,690.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.43 : 28,460.19 = 7,126.09 : x
  2. Step 2: Convert to fraction form
    18,971.43/28,460.19 = 7,126.09/x
  3. Step 3: Cross multiply
    18,971.43x = 28,460.19 × 7,126.09
  4. Step 4: Simplify right side
    18,971.43x = 202,809,875.36
  5. Step 5: Solve for x
    x = 202,809,875.36/18,971.43
  6. Step 6: Final answer
    x = 10,690.28

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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.