Home / 11,145.17-15,379.90-6,666.26

Finding the Fourth Proportional to 11,145.17, 15,379.90 and 6,666.26

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Solution

The fourth proportional to 11,145.17, 15,379.90 and 6,666.26 is: 9,199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.17 : 15,379.90 = 6,666.26 : x
  2. Step 2: Convert to fraction form
    11,145.17/15,379.90 = 6,666.26/x
  3. Step 3: Cross multiply
    11,145.17x = 15,379.90 × 6,666.26
  4. Step 4: Simplify right side
    11,145.17x = 102,526,318.61
  5. Step 5: Solve for x
    x = 102,526,318.61/11,145.17
  6. Step 6: Final answer
    x = 9,199.17

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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.