Home / 28,375.16-39,157.36-15,628.08

Finding the Fourth Proportional to 28,375.16, 39,157.36 and 15,628.08

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Solution

The fourth proportional to 28,375.16, 39,157.36 and 15,628.08 is: 21,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.16 : 39,157.36 = 15,628.08 : x
  2. Step 2: Convert to fraction form
    28,375.16/39,157.36 = 15,628.08/x
  3. Step 3: Cross multiply
    28,375.16x = 39,157.36 × 15,628.08
  4. Step 4: Simplify right side
    28,375.16x = 611,954,462.44
  5. Step 5: Solve for x
    x = 611,954,462.44/28,375.16
  6. Step 6: Final answer
    x = 21,566.56

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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.