Home / 11,116.67-16,666.80-5,266.43

Finding the Fourth Proportional to 11,116.67, 16,666.80 and 5,266.43

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Solution

The fourth proportional to 11,116.67, 16,666.80 and 5,266.43 is: 7,895.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.67 : 16,666.80 = 5,266.43 : x
  2. Step 2: Convert to fraction form
    11,116.67/16,666.80 = 5,266.43/x
  3. Step 3: Cross multiply
    11,116.67x = 16,666.80 × 5,266.43
  4. Step 4: Simplify right side
    11,116.67x = 87,774,535.52
  5. Step 5: Solve for x
    x = 87,774,535.52/11,116.67
  6. Step 6: Final answer
    x = 7,895.76

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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.