Home / 21,192.23-31,786.93-8,709.02

Finding the Fourth Proportional to 21,192.23, 31,786.93 and 8,709.02

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Solution

The fourth proportional to 21,192.23, 31,786.93 and 8,709.02 is: 13,062.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.23 : 31,786.93 = 8,709.02 : x
  2. Step 2: Convert to fraction form
    21,192.23/31,786.93 = 8,709.02/x
  3. Step 3: Cross multiply
    21,192.23x = 31,786.93 × 8,709.02
  4. Step 4: Simplify right side
    21,192.23x = 276,833,009.11
  5. Step 5: Solve for x
    x = 276,833,009.11/21,192.23
  6. Step 6: Final answer
    x = 13,062.95

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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.