Home / 28,146.50-38,843.40-15,571.26

Finding the Fourth Proportional to 28,146.50, 38,843.40 and 15,571.26

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Solution

The fourth proportional to 28,146.50, 38,843.40 and 15,571.26 is: 21,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.50 : 38,843.40 = 15,571.26 : x
  2. Step 2: Convert to fraction form
    28,146.50/38,843.40 = 15,571.26/x
  3. Step 3: Cross multiply
    28,146.50x = 38,843.40 × 15,571.26
  4. Step 4: Simplify right side
    28,146.50x = 604,840,680.68
  5. Step 5: Solve for x
    x = 604,840,680.68/28,146.50
  6. Step 6: Final answer
    x = 21,489.02

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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.