Home / 10,120.95-15,217.47-8,830.62

Finding the Fourth Proportional to 10,120.95, 15,217.47 and 8,830.62

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Solution

The fourth proportional to 10,120.95, 15,217.47 and 8,830.62 is: 13,277.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.95 : 15,217.47 = 8,830.62 : x
  2. Step 2: Convert to fraction form
    10,120.95/15,217.47 = 8,830.62/x
  3. Step 3: Cross multiply
    10,120.95x = 15,217.47 × 8,830.62
  4. Step 4: Simplify right side
    10,120.95x = 134,379,694.93
  5. Step 5: Solve for x
    x = 134,379,694.93/10,120.95
  6. Step 6: Final answer
    x = 13,277.38

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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.