Home / 33,125.31-45,712.89-18,978.21

Finding the Fourth Proportional to 33,125.31, 45,712.89 and 18,978.21

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Solution

The fourth proportional to 33,125.31, 45,712.89 and 18,978.21 is: 26,189.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,125.31 : 45,712.89 = 18,978.21 : x
  2. Step 2: Convert to fraction form
    33,125.31/45,712.89 = 18,978.21/x
  3. Step 3: Cross multiply
    33,125.31x = 45,712.89 × 18,978.21
  4. Step 4: Simplify right side
    33,125.31x = 867,548,826.13
  5. Step 5: Solve for x
    x = 867,548,826.13/33,125.31
  6. Step 6: Final answer
    x = 26,189.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.