Home / 11,605.50-16,017.21-7,129.62

Finding the Fourth Proportional to 11,605.50, 16,017.21 and 7,129.62

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Solution

The fourth proportional to 11,605.50, 16,017.21 and 7,129.62 is: 9,839.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,605.50 : 16,017.21 = 7,129.62 : x
  2. Step 2: Convert to fraction form
    11,605.50/16,017.21 = 7,129.62/x
  3. Step 3: Cross multiply
    11,605.50x = 16,017.21 × 7,129.62
  4. Step 4: Simplify right side
    11,605.50x = 114,196,620.76
  5. Step 5: Solve for x
    x = 114,196,620.76/11,605.50
  6. Step 6: Final answer
    x = 9,839.87

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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.