Home / 11,715.18-16,166.70-6,409.68

Finding the Fourth Proportional to 11,715.18, 16,166.70 and 6,409.68

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Solution

The fourth proportional to 11,715.18, 16,166.70 and 6,409.68 is: 8,845.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.18 : 16,166.70 = 6,409.68 : x
  2. Step 2: Convert to fraction form
    11,715.18/16,166.70 = 6,409.68/x
  3. Step 3: Cross multiply
    11,715.18x = 16,166.70 × 6,409.68
  4. Step 4: Simplify right side
    11,715.18x = 103,623,373.66
  5. Step 5: Solve for x
    x = 103,623,373.66/11,715.18
  6. Step 6: Final answer
    x = 8,845.22

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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.