Home / 25,313.97-34,907.12-21,740.76

Finding the Fourth Proportional to 25,313.97, 34,907.12 and 21,740.76

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Solution

The fourth proportional to 25,313.97, 34,907.12 and 21,740.76 is: 29,979.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,313.97 : 34,907.12 = 21,740.76 : x
  2. Step 2: Convert to fraction form
    25,313.97/34,907.12 = 21,740.76/x
  3. Step 3: Cross multiply
    25,313.97x = 34,907.12 × 21,740.76
  4. Step 4: Simplify right side
    25,313.97x = 758,907,328.07
  5. Step 5: Solve for x
    x = 758,907,328.07/25,313.97
  6. Step 6: Final answer
    x = 29,979.78

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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.