Home / 37,205.12-51,342.84-20,438

Finding the Fourth Proportional to 37,205.12, 51,342.84 and 20,438

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Solution

The fourth proportional to 37,205.12, 51,342.84 and 20,438 is: 28,204.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,205.12 : 51,342.84 = 20,438 : x
  2. Step 2: Convert to fraction form
    37,205.12/51,342.84 = 20,438/x
  3. Step 3: Cross multiply
    37,205.12x = 51,342.84 × 20,438
  4. Step 4: Simplify right side
    37,205.12x = 1,049,344,963.92
  5. Step 5: Solve for x
    x = 1,049,344,963.92/37,205.12
  6. Step 6: Final answer
    x = 28,204.32

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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.