Home / 13,721.22-18,935.31-7,433.59

Finding the Fourth Proportional to 13,721.22, 18,935.31 and 7,433.59

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Solution

The fourth proportional to 13,721.22, 18,935.31 and 7,433.59 is: 10,258.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.22 : 18,935.31 = 7,433.59 : x
  2. Step 2: Convert to fraction form
    13,721.22/18,935.31 = 7,433.59/x
  3. Step 3: Cross multiply
    13,721.22x = 18,935.31 × 7,433.59
  4. Step 4: Simplify right side
    13,721.22x = 140,757,312.48
  5. Step 5: Solve for x
    x = 140,757,312.48/13,721.22
  6. Step 6: Final answer
    x = 10,258.37

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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.