Home / 21,305.27-29,402.57-11,873.81

Finding the Fourth Proportional to 21,305.27, 29,402.57 and 11,873.81

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Solution

The fourth proportional to 21,305.27, 29,402.57 and 11,873.81 is: 16,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.27 : 29,402.57 = 11,873.81 : x
  2. Step 2: Convert to fraction form
    21,305.27/29,402.57 = 11,873.81/x
  3. Step 3: Cross multiply
    21,305.27x = 29,402.57 × 11,873.81
  4. Step 4: Simplify right side
    21,305.27x = 349,120,529.69
  5. Step 5: Solve for x
    x = 349,120,529.69/21,305.27
  6. Step 6: Final answer
    x = 16,386.58

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1.5x scale

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.