Home / 12,778.12-19,169.61-4,460.51

Finding the Fourth Proportional to 12,778.12, 19,169.61 and 4,460.51

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Solution

The fourth proportional to 12,778.12, 19,169.61 and 4,460.51 is: 6,691.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.12 : 19,169.61 = 4,460.51 : x
  2. Step 2: Convert to fraction form
    12,778.12/19,169.61 = 4,460.51/x
  3. Step 3: Cross multiply
    12,778.12x = 19,169.61 × 4,460.51
  4. Step 4: Simplify right side
    12,778.12x = 85,506,237.10
  5. Step 5: Solve for x
    x = 85,506,237.10/12,778.12
  6. Step 6: Final answer
    x = 6,691.61

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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.