Home / 15,418.50-21,280.41-8,794.50

Finding the Fourth Proportional to 15,418.50, 21,280.41 and 8,794.50

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Solution

The fourth proportional to 15,418.50, 21,280.41 and 8,794.50 is: 12,138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,418.50 : 21,280.41 = 8,794.50 : x
  2. Step 2: Convert to fraction form
    15,418.50/21,280.41 = 8,794.50/x
  3. Step 3: Cross multiply
    15,418.50x = 21,280.41 × 8,794.50
  4. Step 4: Simplify right side
    15,418.50x = 187,150,565.75
  5. Step 5: Solve for x
    x = 187,150,565.75/15,418.50
  6. Step 6: Final answer
    x = 12,138.05

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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.