Home / 20,883.12-31,363.56-19,146.48

Finding the Fourth Proportional to 20,883.12, 31,363.56 and 19,146.48

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Solution

The fourth proportional to 20,883.12, 31,363.56 and 19,146.48 is: 28,755.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.12 : 31,363.56 = 19,146.48 : x
  2. Step 2: Convert to fraction form
    20,883.12/31,363.56 = 19,146.48/x
  3. Step 3: Cross multiply
    20,883.12x = 31,363.56 × 19,146.48
  4. Step 4: Simplify right side
    20,883.12x = 600,501,774.27
  5. Step 5: Solve for x
    x = 600,501,774.27/20,883.12
  6. Step 6: Final answer
    x = 28,755.37

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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.