Home / 13,149.80-19,773.30-11,011.40

Finding the Fourth Proportional to 13,149.80, 19,773.30 and 11,011.40

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Solution

The fourth proportional to 13,149.80, 19,773.30 and 11,011.40 is: 16,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.80 : 19,773.30 = 11,011.40 : x
  2. Step 2: Convert to fraction form
    13,149.80/19,773.30 = 11,011.40/x
  3. Step 3: Cross multiply
    13,149.80x = 19,773.30 × 11,011.40
  4. Step 4: Simplify right side
    13,149.80x = 217,731,715.62
  5. Step 5: Solve for x
    x = 217,731,715.62/13,149.80
  6. Step 6: Final answer
    x = 16,557.80

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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.