Home / 12,156.61-16,776.12-6,851.44

Finding the Fourth Proportional to 12,156.61, 16,776.12 and 6,851.44

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Solution

The fourth proportional to 12,156.61, 16,776.12 and 6,851.44 is: 9,454.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,156.61 : 16,776.12 = 6,851.44 : x
  2. Step 2: Convert to fraction form
    12,156.61/16,776.12 = 6,851.44/x
  3. Step 3: Cross multiply
    12,156.61x = 16,776.12 × 6,851.44
  4. Step 4: Simplify right side
    12,156.61x = 114,940,579.61
  5. Step 5: Solve for x
    x = 114,940,579.61/12,156.61
  6. Step 6: Final answer
    x = 9,454.99

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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.