Home / 21,192.57-31,788.86-8,041.81

Finding the Fourth Proportional to 21,192.57, 31,788.86 and 8,041.81

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Solution

The fourth proportional to 21,192.57, 31,788.86 and 8,041.81 is: 12,062.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.57 : 31,788.86 = 8,041.81 : x
  2. Step 2: Convert to fraction form
    21,192.57/31,788.86 = 8,041.81/x
  3. Step 3: Cross multiply
    21,192.57x = 31,788.86 × 8,041.81
  4. Step 4: Simplify right side
    21,192.57x = 255,639,972.24
  5. Step 5: Solve for x
    x = 255,639,972.24/21,192.57
  6. Step 6: Final answer
    x = 12,062.72

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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.