Home / 15,631.27-21,571.19-8,558.15

Finding the Fourth Proportional to 15,631.27, 21,571.19 and 8,558.15

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Solution

The fourth proportional to 15,631.27, 21,571.19 and 8,558.15 is: 11,810.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.27 : 21,571.19 = 8,558.15 : x
  2. Step 2: Convert to fraction form
    15,631.27/21,571.19 = 8,558.15/x
  3. Step 3: Cross multiply
    15,631.27x = 21,571.19 × 8,558.15
  4. Step 4: Simplify right side
    15,631.27x = 184,609,479.70
  5. Step 5: Solve for x
    x = 184,609,479.70/15,631.27
  6. Step 6: Final answer
    x = 11,810.27

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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.