Home / 38,471.48-57,701.43-12,172.80

Finding the Fourth Proportional to 38,471.48, 57,701.43 and 12,172.80

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Solution

The fourth proportional to 38,471.48, 57,701.43 and 12,172.80 is: 18,257.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,471.48 : 57,701.43 = 12,172.80 : x
  2. Step 2: Convert to fraction form
    38,471.48/57,701.43 = 12,172.80/x
  3. Step 3: Cross multiply
    38,471.48x = 57,701.43 × 12,172.80
  4. Step 4: Simplify right side
    38,471.48x = 702,387,967.10
  5. Step 5: Solve for x
    x = 702,387,967.10/38,471.48
  6. Step 6: Final answer
    x = 18,257.37

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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.