Home / 28,340.24-39,163.56-21,254.48

Finding the Fourth Proportional to 28,340.24, 39,163.56 and 21,254.48

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Solution

The fourth proportional to 28,340.24, 39,163.56 and 21,254.48 is: 29,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,340.24 : 39,163.56 = 21,254.48 : x
  2. Step 2: Convert to fraction form
    28,340.24/39,163.56 = 21,254.48/x
  3. Step 3: Cross multiply
    28,340.24x = 39,163.56 × 21,254.48
  4. Step 4: Simplify right side
    28,340.24x = 832,401,102.75
  5. Step 5: Solve for x
    x = 832,401,102.75/28,340.24
  6. Step 6: Final answer
    x = 29,371.70

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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.