Home / 18,930.14-26,129.72-12,210.59

Finding the Fourth Proportional to 18,930.14, 26,129.72 and 12,210.59

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Solution

The fourth proportional to 18,930.14, 26,129.72 and 12,210.59 is: 16,854.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.14 : 26,129.72 = 12,210.59 : x
  2. Step 2: Convert to fraction form
    18,930.14/26,129.72 = 12,210.59/x
  3. Step 3: Cross multiply
    18,930.14x = 26,129.72 × 12,210.59
  4. Step 4: Simplify right side
    18,930.14x = 319,059,297.73
  5. Step 5: Solve for x
    x = 319,059,297.73/18,930.14
  6. Step 6: Final answer
    x = 16,854.57

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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.