Home / 28,111.84-38,791.20-15,533.44

Finding the Fourth Proportional to 28,111.84, 38,791.20 and 15,533.44

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Solution

The fourth proportional to 28,111.84, 38,791.20 and 15,533.44 is: 21,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.84 : 38,791.20 = 15,533.44 : x
  2. Step 2: Convert to fraction form
    28,111.84/38,791.20 = 15,533.44/x
  3. Step 3: Cross multiply
    28,111.84x = 38,791.20 × 15,533.44
  4. Step 4: Simplify right side
    28,111.84x = 602,560,777.73
  5. Step 5: Solve for x
    x = 602,560,777.73/28,111.84
  6. Step 6: Final answer
    x = 21,434.41

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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.