Home / 12,506.95-18,760.43-5,109.74

Finding the Fourth Proportional to 12,506.95, 18,760.43 and 5,109.74

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Solution

The fourth proportional to 12,506.95, 18,760.43 and 5,109.74 is: 7,664.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.95 : 18,760.43 = 5,109.74 : x
  2. Step 2: Convert to fraction form
    12,506.95/18,760.43 = 5,109.74/x
  3. Step 3: Cross multiply
    12,506.95x = 18,760.43 × 5,109.74
  4. Step 4: Simplify right side
    12,506.95x = 95,860,919.59
  5. Step 5: Solve for x
    x = 95,860,919.59/12,506.95
  6. Step 6: Final answer
    x = 7,664.61

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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.