Home / 12,739.68-19,102.40-10,123.92

Finding the Fourth Proportional to 12,739.68, 19,102.40 and 10,123.92

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Solution

The fourth proportional to 12,739.68, 19,102.40 and 10,123.92 is: 15,180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.68 : 19,102.40 = 10,123.92 : x
  2. Step 2: Convert to fraction form
    12,739.68/19,102.40 = 10,123.92/x
  3. Step 3: Cross multiply
    12,739.68x = 19,102.40 × 10,123.92
  4. Step 4: Simplify right side
    12,739.68x = 193,391,169.41
  5. Step 5: Solve for x
    x = 193,391,169.41/12,739.68
  6. Step 6: Final answer
    x = 15,180.22

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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.