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Finding the Fourth Proportional to 11,005.70, 16,472.10 and 10,130.90

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Solution

The fourth proportional to 11,005.70, 16,472.10 and 10,130.90 is: 15,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,005.70 : 16,472.10 = 10,130.90 : x
  2. Step 2: Convert to fraction form
    11,005.70/16,472.10 = 10,130.90/x
  3. Step 3: Cross multiply
    11,005.70x = 16,472.10 × 10,130.90
  4. Step 4: Simplify right side
    11,005.70x = 166,877,197.89
  5. Step 5: Solve for x
    x = 166,877,197.89/11,005.70
  6. Step 6: Final answer
    x = 15,162.80

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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.