Home / 28,621.86-39,500.46-15,876.30

Finding the Fourth Proportional to 28,621.86, 39,500.46 and 15,876.30

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Solution

The fourth proportional to 28,621.86, 39,500.46 and 15,876.30 is: 21,910.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.86 : 39,500.46 = 15,876.30 : x
  2. Step 2: Convert to fraction form
    28,621.86/39,500.46 = 15,876.30/x
  3. Step 3: Cross multiply
    28,621.86x = 39,500.46 × 15,876.30
  4. Step 4: Simplify right side
    28,621.86x = 627,121,153.10
  5. Step 5: Solve for x
    x = 627,121,153.10/28,621.86
  6. Step 6: Final answer
    x = 21,910.57

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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.