Home / 21,229.29-31,795.38-10,143.77

Finding the Fourth Proportional to 21,229.29, 31,795.38 and 10,143.77

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Solution

The fourth proportional to 21,229.29, 31,795.38 and 10,143.77 is: 15,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.29 : 31,795.38 = 10,143.77 : x
  2. Step 2: Convert to fraction form
    21,229.29/31,795.38 = 10,143.77/x
  3. Step 3: Cross multiply
    21,229.29x = 31,795.38 × 10,143.77
  4. Step 4: Simplify right side
    21,229.29x = 322,524,862.81
  5. Step 5: Solve for x
    x = 322,524,862.81/21,229.29
  6. Step 6: Final answer
    x = 15,192.45

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1.5x scale

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.