Home / 11,318.40-15,621.76-6,605.44

Finding the Fourth Proportional to 11,318.40, 15,621.76 and 6,605.44

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Solution

The fourth proportional to 11,318.40, 15,621.76 and 6,605.44 is: 9,116.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,318.40 : 15,621.76 = 6,605.44 : x
  2. Step 2: Convert to fraction form
    11,318.40/15,621.76 = 6,605.44/x
  3. Step 3: Cross multiply
    11,318.40x = 15,621.76 × 6,605.44
  4. Step 4: Simplify right side
    11,318.40x = 103,188,598.37
  5. Step 5: Solve for x
    x = 103,188,598.37/11,318.40
  6. Step 6: Final answer
    x = 9,116.89

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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.