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Finding the Fourth Proportional to 11,108.70, 16,663.35 and 4,865.50

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Solution

The fourth proportional to 11,108.70, 16,663.35 and 4,865.50 is: 7,298.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.70 : 16,663.35 = 4,865.50 : x
  2. Step 2: Convert to fraction form
    11,108.70/16,663.35 = 4,865.50/x
  3. Step 3: Cross multiply
    11,108.70x = 16,663.35 × 4,865.50
  4. Step 4: Simplify right side
    11,108.70x = 81,075,529.43
  5. Step 5: Solve for x
    x = 81,075,529.43/11,108.70
  6. Step 6: Final answer
    x = 7,298.38

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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.