Home / 13,143.72-19,717.98-4,377.80

Finding the Fourth Proportional to 13,143.72, 19,717.98 and 4,377.80

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Solution

The fourth proportional to 13,143.72, 19,717.98 and 4,377.80 is: 6,567.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143.72 : 19,717.98 = 4,377.80 : x
  2. Step 2: Convert to fraction form
    13,143.72/19,717.98 = 4,377.80/x
  3. Step 3: Cross multiply
    13,143.72x = 19,717.98 × 4,377.80
  4. Step 4: Simplify right side
    13,143.72x = 86,321,372.84
  5. Step 5: Solve for x
    x = 86,321,372.84/13,143.72
  6. Step 6: Final answer
    x = 6,567.50

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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.