Home / 23,134.80-31,979.84-20,641.62

Finding the Fourth Proportional to 23,134.80, 31,979.84 and 20,641.62

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Solution

The fourth proportional to 23,134.80, 31,979.84 and 20,641.62 is: 28,533.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,134.80 : 31,979.84 = 20,641.62 : x
  2. Step 2: Convert to fraction form
    23,134.80/31,979.84 = 20,641.62/x
  3. Step 3: Cross multiply
    23,134.80x = 31,979.84 × 20,641.62
  4. Step 4: Simplify right side
    23,134.80x = 660,115,601.73
  5. Step 5: Solve for x
    x = 660,115,601.73/23,134.80
  6. Step 6: Final answer
    x = 28,533.45

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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.