Home / 12,108.72-16,710.12-6,731.28

Finding the Fourth Proportional to 12,108.72, 16,710.12 and 6,731.28

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Solution

The fourth proportional to 12,108.72, 16,710.12 and 6,731.28 is: 9,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.72 : 16,710.12 = 6,731.28 : x
  2. Step 2: Convert to fraction form
    12,108.72/16,710.12 = 6,731.28/x
  3. Step 3: Cross multiply
    12,108.72x = 16,710.12 × 6,731.28
  4. Step 4: Simplify right side
    12,108.72x = 112,480,496.55
  5. Step 5: Solve for x
    x = 112,480,496.55/12,108.72
  6. Step 6: Final answer
    x = 9,289.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.