Home / 12,917.98-19,374.40-3,555.57

Finding the Fourth Proportional to 12,917.98, 19,374.40 and 3,555.57

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Solution

The fourth proportional to 12,917.98, 19,374.40 and 3,555.57 is: 5,332.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.98 : 19,374.40 = 3,555.57 : x
  2. Step 2: Convert to fraction form
    12,917.98/19,374.40 = 3,555.57/x
  3. Step 3: Cross multiply
    12,917.98x = 19,374.40 × 3,555.57
  4. Step 4: Simplify right side
    12,917.98x = 68,887,035.41
  5. Step 5: Solve for x
    x = 68,887,035.41/12,917.98
  6. Step 6: Final answer
    x = 5,332.65

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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.