Home / 25,660.54-35,427.72-19,680.70

Finding the Fourth Proportional to 25,660.54, 35,427.72 and 19,680.70

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Solution

The fourth proportional to 25,660.54, 35,427.72 and 19,680.70 is: 27,171.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,660.54 : 35,427.72 = 19,680.70 : x
  2. Step 2: Convert to fraction form
    25,660.54/35,427.72 = 19,680.70/x
  3. Step 3: Cross multiply
    25,660.54x = 35,427.72 × 19,680.70
  4. Step 4: Simplify right side
    25,660.54x = 697,242,329.00
  5. Step 5: Solve for x
    x = 697,242,329.00/25,660.54
  6. Step 6: Final answer
    x = 27,171.77

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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.