Home / 12,991.24-19,486.88-8,377.48

Finding the Fourth Proportional to 12,991.24, 19,486.88 and 8,377.48

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Solution

The fourth proportional to 12,991.24, 19,486.88 and 8,377.48 is: 12,566.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,991.24 : 19,486.88 = 8,377.48 : x
  2. Step 2: Convert to fraction form
    12,991.24/19,486.88 = 8,377.48/x
  3. Step 3: Cross multiply
    12,991.24x = 19,486.88 × 8,377.48
  4. Step 4: Simplify right side
    12,991.24x = 163,250,947.46
  5. Step 5: Solve for x
    x = 163,250,947.46/12,991.24
  6. Step 6: Final answer
    x = 12,566.23

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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.