Home / 25,520.79-38,280.96-8,880.78

Finding the Fourth Proportional to 25,520.79, 38,280.96 and 8,880.78

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Solution

The fourth proportional to 25,520.79, 38,280.96 and 8,880.78 is: 13,321.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,520.79 : 38,280.96 = 8,880.78 : x
  2. Step 2: Convert to fraction form
    25,520.79/38,280.96 = 8,880.78/x
  3. Step 3: Cross multiply
    25,520.79x = 38,280.96 × 8,880.78
  4. Step 4: Simplify right side
    25,520.79x = 339,964,783.95
  5. Step 5: Solve for x
    x = 339,964,783.95/25,520.79
  6. Step 6: Final answer
    x = 13,321.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.