Home / 15,253.72-21,049.10-8,447.25

Finding the Fourth Proportional to 15,253.72, 21,049.10 and 8,447.25

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Solution

The fourth proportional to 15,253.72, 21,049.10 and 8,447.25 is: 11,656.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,253.72 : 21,049.10 = 8,447.25 : x
  2. Step 2: Convert to fraction form
    15,253.72/21,049.10 = 8,447.25/x
  3. Step 3: Cross multiply
    15,253.72x = 21,049.10 × 8,447.25
  4. Step 4: Simplify right side
    15,253.72x = 177,807,009.98
  5. Step 5: Solve for x
    x = 177,807,009.98/15,253.72
  6. Step 6: Final answer
    x = 11,656.63

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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.