Home / 12,917.10-19,370.85-5,124.30

Finding the Fourth Proportional to 12,917.10, 19,370.85 and 5,124.30

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Solution

The fourth proportional to 12,917.10, 19,370.85 and 5,124.30 is: 7,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.10 : 19,370.85 = 5,124.30 : x
  2. Step 2: Convert to fraction form
    12,917.10/19,370.85 = 5,124.30/x
  3. Step 3: Cross multiply
    12,917.10x = 19,370.85 × 5,124.30
  4. Step 4: Simplify right side
    12,917.10x = 99,262,046.66
  5. Step 5: Solve for x
    x = 99,262,046.66/12,917.10
  6. Step 6: Final answer
    x = 7,684.55

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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.