Home / 13,178.60-18,179.59-8,929.95

Finding the Fourth Proportional to 13,178.60, 18,179.59 and 8,929.95

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Solution

The fourth proportional to 13,178.60, 18,179.59 and 8,929.95 is: 12,318.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.60 : 18,179.59 = 8,929.95 : x
  2. Step 2: Convert to fraction form
    13,178.60/18,179.59 = 8,929.95/x
  3. Step 3: Cross multiply
    13,178.60x = 18,179.59 × 8,929.95
  4. Step 4: Simplify right side
    13,178.60x = 162,342,755.97
  5. Step 5: Solve for x
    x = 162,342,755.97/13,178.60
  6. Step 6: Final answer
    x = 12,318.67

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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.