Home / 12,921.64-17,837.30-8,735.56

Finding the Fourth Proportional to 12,921.64, 17,837.30 and 8,735.56

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Solution

The fourth proportional to 12,921.64, 17,837.30 and 8,735.56 is: 12,058.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.64 : 17,837.30 = 8,735.56 : x
  2. Step 2: Convert to fraction form
    12,921.64/17,837.30 = 8,735.56/x
  3. Step 3: Cross multiply
    12,921.64x = 17,837.30 × 8,735.56
  4. Step 4: Simplify right side
    12,921.64x = 155,818,804.39
  5. Step 5: Solve for x
    x = 155,818,804.39/12,921.64
  6. Step 6: Final answer
    x = 12,058.75

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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.