Home / 13,246.92-18,280.86-7,278.70

Finding the Fourth Proportional to 13,246.92, 18,280.86 and 7,278.70

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Solution

The fourth proportional to 13,246.92, 18,280.86 and 7,278.70 is: 10,044.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.92 : 18,280.86 = 7,278.70 : x
  2. Step 2: Convert to fraction form
    13,246.92/18,280.86 = 7,278.70/x
  3. Step 3: Cross multiply
    13,246.92x = 18,280.86 × 7,278.70
  4. Step 4: Simplify right side
    13,246.92x = 133,060,895.68
  5. Step 5: Solve for x
    x = 133,060,895.68/13,246.92
  6. Step 6: Final answer
    x = 10,044.67

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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.