Home / 12,895.66-19,342.20-4,128.22

Finding the Fourth Proportional to 12,895.66, 19,342.20 and 4,128.22

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Solution

The fourth proportional to 12,895.66, 19,342.20 and 4,128.22 is: 6,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.66 : 19,342.20 = 4,128.22 : x
  2. Step 2: Convert to fraction form
    12,895.66/19,342.20 = 4,128.22/x
  3. Step 3: Cross multiply
    12,895.66x = 19,342.20 × 4,128.22
  4. Step 4: Simplify right side
    12,895.66x = 79,848,856.88
  5. Step 5: Solve for x
    x = 79,848,856.88/12,895.66
  6. Step 6: Final answer
    x = 6,191.92

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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.