Home / 30,896.16-42,634.38-20,838.24

Finding the Fourth Proportional to 30,896.16, 42,634.38 and 20,838.24

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Solution

The fourth proportional to 30,896.16, 42,634.38 and 20,838.24 is: 28,755.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,896.16 : 42,634.38 = 20,838.24 : x
  2. Step 2: Convert to fraction form
    30,896.16/42,634.38 = 20,838.24/x
  3. Step 3: Cross multiply
    30,896.16x = 42,634.38 × 20,838.24
  4. Step 4: Simplify right side
    30,896.16x = 888,425,442.69
  5. Step 5: Solve for x
    x = 888,425,442.69/30,896.16
  6. Step 6: Final answer
    x = 28,755.21

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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.