Home / 21,029.96-31,535.69-7,873.10

Finding the Fourth Proportional to 21,029.96, 31,535.69 and 7,873.10

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Solution

The fourth proportional to 21,029.96, 31,535.69 and 7,873.10 is: 11,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.96 : 31,535.69 = 7,873.10 : x
  2. Step 2: Convert to fraction form
    21,029.96/31,535.69 = 7,873.10/x
  3. Step 3: Cross multiply
    21,029.96x = 31,535.69 × 7,873.10
  4. Step 4: Simplify right side
    21,029.96x = 248,283,502.94
  5. Step 5: Solve for x
    x = 248,283,502.94/21,029.96
  6. Step 6: Final answer
    x = 11,806.18

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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.