Home / 11,351.19-15,664.89-6,315.60

Finding the Fourth Proportional to 11,351.19, 15,664.89 and 6,315.60

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Solution

The fourth proportional to 11,351.19, 15,664.89 and 6,315.60 is: 8,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,351.19 : 15,664.89 = 6,315.60 : x
  2. Step 2: Convert to fraction form
    11,351.19/15,664.89 = 6,315.60/x
  3. Step 3: Cross multiply
    11,351.19x = 15,664.89 × 6,315.60
  4. Step 4: Simplify right side
    11,351.19x = 98,933,179.28
  5. Step 5: Solve for x
    x = 98,933,179.28/11,351.19
  6. Step 6: Final answer
    x = 8,715.67

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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.