Home / 28,375.26-39,157.47-15,800.10

Finding the Fourth Proportional to 28,375.26, 39,157.47 and 15,800.10

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Solution

The fourth proportional to 28,375.26, 39,157.47 and 15,800.10 is: 21,803.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.26 : 39,157.47 = 15,800.10 : x
  2. Step 2: Convert to fraction form
    28,375.26/39,157.47 = 15,800.10/x
  3. Step 3: Cross multiply
    28,375.26x = 39,157.47 × 15,800.10
  4. Step 4: Simplify right side
    28,375.26x = 618,691,941.75
  5. Step 5: Solve for x
    x = 618,691,941.75/28,375.26
  6. Step 6: Final answer
    x = 21,803.92

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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.