Home / 12,078.06-16,666.20-7,043.91

Finding the Fourth Proportional to 12,078.06, 16,666.20 and 7,043.91

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Solution

The fourth proportional to 12,078.06, 16,666.20 and 7,043.91 is: 9,719.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.06 : 16,666.20 = 7,043.91 : x
  2. Step 2: Convert to fraction form
    12,078.06/16,666.20 = 7,043.91/x
  3. Step 3: Cross multiply
    12,078.06x = 16,666.20 × 7,043.91
  4. Step 4: Simplify right side
    12,078.06x = 117,395,212.84
  5. Step 5: Solve for x
    x = 117,395,212.84/12,078.06
  6. Step 6: Final answer
    x = 9,719.71

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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.