Home / 23,160.88-31,928.55-15,189.28

Finding the Fourth Proportional to 23,160.88, 31,928.55 and 15,189.28

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Solution

The fourth proportional to 23,160.88, 31,928.55 and 15,189.28 is: 20,939.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,160.88 : 31,928.55 = 15,189.28 : x
  2. Step 2: Convert to fraction form
    23,160.88/31,928.55 = 15,189.28/x
  3. Step 3: Cross multiply
    23,160.88x = 31,928.55 × 15,189.28
  4. Step 4: Simplify right side
    23,160.88x = 484,971,685.94
  5. Step 5: Solve for x
    x = 484,971,685.94/23,160.88
  6. Step 6: Final answer
    x = 20,939.26

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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.