Home / 28,375.25-39,157.52-15,628.19

Finding the Fourth Proportional to 28,375.25, 39,157.52 and 15,628.19

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Solution

The fourth proportional to 28,375.25, 39,157.52 and 15,628.19 is: 21,566.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.25 : 39,157.52 = 15,628.19 : x
  2. Step 2: Convert to fraction form
    28,375.25/39,157.52 = 15,628.19/x
  3. Step 3: Cross multiply
    28,375.25x = 39,157.52 × 15,628.19
  4. Step 4: Simplify right side
    28,375.25x = 611,960,888.56
  5. Step 5: Solve for x
    x = 611,960,888.56/28,375.25
  6. Step 6: Final answer
    x = 21,566.72

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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.