Home / 12,917.90-19,378.47-4,152.62

Finding the Fourth Proportional to 12,917.90, 19,378.47 and 4,152.62

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Solution

The fourth proportional to 12,917.90, 19,378.47 and 4,152.62 is: 6,229.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.90 : 19,378.47 = 4,152.62 : x
  2. Step 2: Convert to fraction form
    12,917.90/19,378.47 = 4,152.62/x
  3. Step 3: Cross multiply
    12,917.90x = 19,378.47 × 4,152.62
  4. Step 4: Simplify right side
    12,917.90x = 80,471,422.09
  5. Step 5: Solve for x
    x = 80,471,422.09/12,917.90
  6. Step 6: Final answer
    x = 6,229.45

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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.