Home / 20,956.51-28,919.73-11,524.87

Finding the Fourth Proportional to 20,956.51, 28,919.73 and 11,524.87

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Solution

The fourth proportional to 20,956.51, 28,919.73 and 11,524.87 is: 15,904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.51 : 28,919.73 = 11,524.87 : x
  2. Step 2: Convert to fraction form
    20,956.51/28,919.73 = 11,524.87/x
  3. Step 3: Cross multiply
    20,956.51x = 28,919.73 × 11,524.87
  4. Step 4: Simplify right side
    20,956.51x = 333,296,128.69
  5. Step 5: Solve for x
    x = 333,296,128.69/20,956.51
  6. Step 6: Final answer
    x = 15,904.18

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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.