Home / 12,684.88-19,022.28-4,888.72

Finding the Fourth Proportional to 12,684.88, 19,022.28 and 4,888.72

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Solution

The fourth proportional to 12,684.88, 19,022.28 and 4,888.72 is: 7,331.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,684.88 : 19,022.28 = 4,888.72 : x
  2. Step 2: Convert to fraction form
    12,684.88/19,022.28 = 4,888.72/x
  3. Step 3: Cross multiply
    12,684.88x = 19,022.28 × 4,888.72
  4. Step 4: Simplify right side
    12,684.88x = 92,994,600.68
  5. Step 5: Solve for x
    x = 92,994,600.68/12,684.88
  6. Step 6: Final answer
    x = 7,331.14

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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.