Home / 15,481.45-21,364.05-8,407.72

Finding the Fourth Proportional to 15,481.45, 21,364.05 and 8,407.72

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Solution

The fourth proportional to 15,481.45, 21,364.05 and 8,407.72 is: 11,602.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.45 : 21,364.05 = 8,407.72 : x
  2. Step 2: Convert to fraction form
    15,481.45/21,364.05 = 8,407.72/x
  3. Step 3: Cross multiply
    15,481.45x = 21,364.05 × 8,407.72
  4. Step 4: Simplify right side
    15,481.45x = 179,622,950.47
  5. Step 5: Solve for x
    x = 179,622,950.47/15,481.45
  6. Step 6: Final answer
    x = 11,602.46

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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.