Home / 28,621.60-39,500.24-15,878.89

Finding the Fourth Proportional to 28,621.60, 39,500.24 and 15,878.89

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Solution

The fourth proportional to 28,621.60, 39,500.24 and 15,878.89 is: 21,914.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.60 : 39,500.24 = 15,878.89 : x
  2. Step 2: Convert to fraction form
    28,621.60/39,500.24 = 15,878.89/x
  3. Step 3: Cross multiply
    28,621.60x = 39,500.24 × 15,878.89
  4. Step 4: Simplify right side
    28,621.60x = 627,219,769.55
  5. Step 5: Solve for x
    x = 627,219,769.55/28,621.60
  6. Step 6: Final answer
    x = 21,914.21

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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.