Home / 12,759.18-19,142.82-6,520.86

Finding the Fourth Proportional to 12,759.18, 19,142.82 and 6,520.86

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Solution

The fourth proportional to 12,759.18, 19,142.82 and 6,520.86 is: 9,783.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.18 : 19,142.82 = 6,520.86 : x
  2. Step 2: Convert to fraction form
    12,759.18/19,142.82 = 6,520.86/x
  3. Step 3: Cross multiply
    12,759.18x = 19,142.82 × 6,520.86
  4. Step 4: Simplify right side
    12,759.18x = 124,827,649.23
  5. Step 5: Solve for x
    x = 124,827,649.23/12,759.18
  6. Step 6: Final answer
    x = 9,783.36

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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.