Home / 12,887.71-19,334.30-4,123.31

Finding the Fourth Proportional to 12,887.71, 19,334.30 and 4,123.31

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Solution

The fourth proportional to 12,887.71, 19,334.30 and 4,123.31 is: 6,185.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.71 : 19,334.30 = 4,123.31 : x
  2. Step 2: Convert to fraction form
    12,887.71/19,334.30 = 4,123.31/x
  3. Step 3: Cross multiply
    12,887.71x = 19,334.30 × 4,123.31
  4. Step 4: Simplify right side
    12,887.71x = 79,721,195.24
  5. Step 5: Solve for x
    x = 79,721,195.24/12,887.71
  6. Step 6: Final answer
    x = 6,185.83

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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.