Home / 13,178.31-19,739.79-8,998.74

Finding the Fourth Proportional to 13,178.31, 19,739.79 and 8,998.74

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Solution

The fourth proportional to 13,178.31, 19,739.79 and 8,998.74 is: 13,479.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.31 : 19,739.79 = 8,998.74 : x
  2. Step 2: Convert to fraction form
    13,178.31/19,739.79 = 8,998.74/x
  3. Step 3: Cross multiply
    13,178.31x = 19,739.79 × 8,998.74
  4. Step 4: Simplify right side
    13,178.31x = 177,633,237.86
  5. Step 5: Solve for x
    x = 177,633,237.86/13,178.31
  6. Step 6: Final answer
    x = 13,479.21

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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.