Home / 30,961.17-42,736.05-19,783.17

Finding the Fourth Proportional to 30,961.17, 42,736.05 and 19,783.17

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Solution

The fourth proportional to 30,961.17, 42,736.05 and 19,783.17 is: 27,306.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,961.17 : 42,736.05 = 19,783.17 : x
  2. Step 2: Convert to fraction form
    30,961.17/42,736.05 = 19,783.17/x
  3. Step 3: Cross multiply
    30,961.17x = 42,736.05 × 19,783.17
  4. Step 4: Simplify right side
    30,961.17x = 845,454,542.28
  5. Step 5: Solve for x
    x = 845,454,542.28/30,961.17
  6. Step 6: Final answer
    x = 27,306.93

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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.