Home / 12,686.36-19,029.18-5,672.84

Finding the Fourth Proportional to 12,686.36, 19,029.18 and 5,672.84

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Solution

The fourth proportional to 12,686.36, 19,029.18 and 5,672.84 is: 8,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.36 : 19,029.18 = 5,672.84 : x
  2. Step 2: Convert to fraction form
    12,686.36/19,029.18 = 5,672.84/x
  3. Step 3: Cross multiply
    12,686.36x = 19,029.18 × 5,672.84
  4. Step 4: Simplify right side
    12,686.36x = 107,949,493.47
  5. Step 5: Solve for x
    x = 107,949,493.47/12,686.36
  6. Step 6: Final answer
    x = 8,509.10

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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.