Home / 15,280.50-21,078.45-8,906.34

Finding the Fourth Proportional to 15,280.50, 21,078.45 and 8,906.34

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Solution

The fourth proportional to 15,280.50, 21,078.45 and 8,906.34 is: 12,285.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,280.50 : 21,078.45 = 8,906.34 : x
  2. Step 2: Convert to fraction form
    15,280.50/21,078.45 = 8,906.34/x
  3. Step 3: Cross multiply
    15,280.50x = 21,078.45 × 8,906.34
  4. Step 4: Simplify right side
    15,280.50x = 187,731,842.37
  5. Step 5: Solve for x
    x = 187,731,842.37/15,280.50
  6. Step 6: Final answer
    x = 12,285.71

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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.