Home / 15,322.40-21,144.12-8,608.31

Finding the Fourth Proportional to 15,322.40, 21,144.12 and 8,608.31

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Solution

The fourth proportional to 15,322.40, 21,144.12 and 8,608.31 is: 11,879.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.40 : 21,144.12 = 8,608.31 : x
  2. Step 2: Convert to fraction form
    15,322.40/21,144.12 = 8,608.31/x
  3. Step 3: Cross multiply
    15,322.40x = 21,144.12 × 8,608.31
  4. Step 4: Simplify right side
    15,322.40x = 182,015,139.64
  5. Step 5: Solve for x
    x = 182,015,139.64/15,322.40
  6. Step 6: Final answer
    x = 11,879.02

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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.