Home / 10,931.28-16,409.06-5,664.88

Finding the Fourth Proportional to 10,931.28, 16,409.06 and 5,664.88

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Solution

The fourth proportional to 10,931.28, 16,409.06 and 5,664.88 is: 8,503.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.28 : 16,409.06 = 5,664.88 : x
  2. Step 2: Convert to fraction form
    10,931.28/16,409.06 = 5,664.88/x
  3. Step 3: Cross multiply
    10,931.28x = 16,409.06 × 5,664.88
  4. Step 4: Simplify right side
    10,931.28x = 92,955,355.81
  5. Step 5: Solve for x
    x = 92,955,355.81/10,931.28
  6. Step 6: Final answer
    x = 8,503.61

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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.