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Finding the Fourth Proportional to 15,216.26, 20,999.26 and 8,502.02

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Solution

The fourth proportional to 15,216.26, 20,999.26 and 8,502.02 is: 11,733.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.26 : 20,999.26 = 8,502.02 : x
  2. Step 2: Convert to fraction form
    15,216.26/20,999.26 = 8,502.02/x
  3. Step 3: Cross multiply
    15,216.26x = 20,999.26 × 8,502.02
  4. Step 4: Simplify right side
    15,216.26x = 178,536,128.51
  5. Step 5: Solve for x
    x = 178,536,128.51/15,216.26
  6. Step 6: Final answer
    x = 11,733.25

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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.