Home / 12,320.10-16,999.88-6,942.71

Finding the Fourth Proportional to 12,320.10, 16,999.88 and 6,942.71

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Solution

The fourth proportional to 12,320.10, 16,999.88 and 6,942.71 is: 9,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.10 : 16,999.88 = 6,942.71 : x
  2. Step 2: Convert to fraction form
    12,320.10/16,999.88 = 6,942.71/x
  3. Step 3: Cross multiply
    12,320.10x = 16,999.88 × 6,942.71
  4. Step 4: Simplify right side
    12,320.10x = 118,025,244.66
  5. Step 5: Solve for x
    x = 118,025,244.66/12,320.10
  6. Step 6: Final answer
    x = 9,579.89

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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.