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Finding the Fourth Proportional to 10,959.20, 16,446.90 and 7,260.20

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Solution

The fourth proportional to 10,959.20, 16,446.90 and 7,260.20 is: 10,895.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,959.20 : 16,446.90 = 7,260.20 : x
  2. Step 2: Convert to fraction form
    10,959.20/16,446.90 = 7,260.20/x
  3. Step 3: Cross multiply
    10,959.20x = 16,446.90 × 7,260.20
  4. Step 4: Simplify right side
    10,959.20x = 119,407,783.38
  5. Step 5: Solve for x
    x = 119,407,783.38/10,959.20
  6. Step 6: Final answer
    x = 10,895.67

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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.