Home / 33,129.46-45,718.63-18,990.51

Finding the Fourth Proportional to 33,129.46, 45,718.63 and 18,990.51

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Solution

The fourth proportional to 33,129.46, 45,718.63 and 18,990.51 is: 26,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.46 : 45,718.63 = 18,990.51 : x
  2. Step 2: Convert to fraction form
    33,129.46/45,718.63 = 18,990.51/x
  3. Step 3: Cross multiply
    33,129.46x = 45,718.63 × 18,990.51
  4. Step 4: Simplify right side
    33,129.46x = 868,220,100.20
  5. Step 5: Solve for x
    x = 868,220,100.20/33,129.46
  6. Step 6: Final answer
    x = 26,206.89

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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.