Home / 12,229.07-16,875.06-7,123.79

Finding the Fourth Proportional to 12,229.07, 16,875.06 and 7,123.79

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Solution

The fourth proportional to 12,229.07, 16,875.06 and 7,123.79 is: 9,830.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.07 : 16,875.06 = 7,123.79 : x
  2. Step 2: Convert to fraction form
    12,229.07/16,875.06 = 7,123.79/x
  3. Step 3: Cross multiply
    12,229.07x = 16,875.06 × 7,123.79
  4. Step 4: Simplify right side
    12,229.07x = 120,214,383.68
  5. Step 5: Solve for x
    x = 120,214,383.68/12,229.07
  6. Step 6: Final answer
    x = 9,830.21

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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.