Home / 23,179.95-31,982.96-15,640.26

Finding the Fourth Proportional to 23,179.95, 31,982.96 and 15,640.26

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Solution

The fourth proportional to 23,179.95, 31,982.96 and 15,640.26 is: 21,579.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,179.95 : 31,982.96 = 15,640.26 : x
  2. Step 2: Convert to fraction form
    23,179.95/31,982.96 = 15,640.26/x
  3. Step 3: Cross multiply
    23,179.95x = 31,982.96 × 15,640.26
  4. Step 4: Simplify right side
    23,179.95x = 500,221,731.77
  5. Step 5: Solve for x
    x = 500,221,731.77/23,179.95
  6. Step 6: Final answer
    x = 21,579.93

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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.