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Finding the Fourth Proportional to 10,668.92, 14,702.11 and 8,153.87

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Solution

The fourth proportional to 10,668.92, 14,702.11 and 8,153.87 is: 11,236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,668.92 : 14,702.11 = 8,153.87 : x
  2. Step 2: Convert to fraction form
    10,668.92/14,702.11 = 8,153.87/x
  3. Step 3: Cross multiply
    10,668.92x = 14,702.11 × 8,153.87
  4. Step 4: Simplify right side
    10,668.92x = 119,878,999.77
  5. Step 5: Solve for x
    x = 119,878,999.77/10,668.92
  6. Step 6: Final answer
    x = 11,236.29

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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.