Home / 21,801.24-30,091.50-13,424.76

Finding the Fourth Proportional to 21,801.24, 30,091.50 and 13,424.76

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Solution

The fourth proportional to 21,801.24, 30,091.50 and 13,424.76 is: 18,529.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.24 : 30,091.50 = 13,424.76 : x
  2. Step 2: Convert to fraction form
    21,801.24/30,091.50 = 13,424.76/x
  3. Step 3: Cross multiply
    21,801.24x = 30,091.50 × 13,424.76
  4. Step 4: Simplify right side
    21,801.24x = 403,971,165.54
  5. Step 5: Solve for x
    x = 403,971,165.54/21,801.24
  6. Step 6: Final answer
    x = 18,529.73

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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.