Home / 12,979.17-19,442.56-12,306.67

Finding the Fourth Proportional to 12,979.17, 19,442.56 and 12,306.67

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Solution

The fourth proportional to 12,979.17, 19,442.56 and 12,306.67 is: 18,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.17 : 19,442.56 = 12,306.67 : x
  2. Step 2: Convert to fraction form
    12,979.17/19,442.56 = 12,306.67/x
  3. Step 3: Cross multiply
    12,979.17x = 19,442.56 × 12,306.67
  4. Step 4: Simplify right side
    12,979.17x = 239,273,169.88
  5. Step 5: Solve for x
    x = 239,273,169.88/12,979.17
  6. Step 6: Final answer
    x = 18,435.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.