Home / 15,311.66-21,131.96-8,597.57

Finding the Fourth Proportional to 15,311.66, 21,131.96 and 8,597.57

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Solution

The fourth proportional to 15,311.66, 21,131.96 and 8,597.57 is: 11,865.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.66 : 21,131.96 = 8,597.57 : x
  2. Step 2: Convert to fraction form
    15,311.66/21,131.96 = 8,597.57/x
  3. Step 3: Cross multiply
    15,311.66x = 21,131.96 × 8,597.57
  4. Step 4: Simplify right side
    15,311.66x = 181,683,356.69
  5. Step 5: Solve for x
    x = 181,683,356.69/15,311.66
  6. Step 6: Final answer
    x = 11,865.69

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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.