Home / 12,178.98-16,807.77-6,871.86

Finding the Fourth Proportional to 12,178.98, 16,807.77 and 6,871.86

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Solution

The fourth proportional to 12,178.98, 16,807.77 and 6,871.86 is: 9,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.98 : 16,807.77 = 6,871.86 : x
  2. Step 2: Convert to fraction form
    12,178.98/16,807.77 = 6,871.86/x
  3. Step 3: Cross multiply
    12,178.98x = 16,807.77 × 6,871.86
  4. Step 4: Simplify right side
    12,178.98x = 115,500,642.35
  5. Step 5: Solve for x
    x = 115,500,642.35/12,178.98
  6. Step 6: Final answer
    x = 9,483.61

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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.