Home / 28,133.17-38,822.20-15,383.82

Finding the Fourth Proportional to 28,133.17, 38,822.20 and 15,383.82

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Solution

The fourth proportional to 28,133.17, 38,822.20 and 15,383.82 is: 21,228.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,133.17 : 38,822.20 = 15,383.82 : x
  2. Step 2: Convert to fraction form
    28,133.17/38,822.20 = 15,383.82/x
  3. Step 3: Cross multiply
    28,133.17x = 38,822.20 × 15,383.82
  4. Step 4: Simplify right side
    28,133.17x = 597,233,736.80
  5. Step 5: Solve for x
    x = 597,233,736.80/28,133.17
  6. Step 6: Final answer
    x = 21,228.81

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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.