Home / 12,921.28-17,837.76-8,945.44

Finding the Fourth Proportional to 12,921.28, 17,837.76 and 8,945.44

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Solution

The fourth proportional to 12,921.28, 17,837.76 and 8,945.44 is: 12,349.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.28 : 17,837.76 = 8,945.44 : x
  2. Step 2: Convert to fraction form
    12,921.28/17,837.76 = 8,945.44/x
  3. Step 3: Cross multiply
    12,921.28x = 17,837.76 × 8,945.44
  4. Step 4: Simplify right side
    12,921.28x = 159,566,611.81
  5. Step 5: Solve for x
    x = 159,566,611.81/12,921.28
  6. Step 6: Final answer
    x = 12,349.13

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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.