Home / 13,721.54-18,935.55-7,433.91

Finding the Fourth Proportional to 13,721.54, 18,935.55 and 7,433.91

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Solution

The fourth proportional to 13,721.54, 18,935.55 and 7,433.91 is: 10,258.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.54 : 18,935.55 = 7,433.91 : x
  2. Step 2: Convert to fraction form
    13,721.54/18,935.55 = 7,433.91/x
  3. Step 3: Cross multiply
    13,721.54x = 18,935.55 × 7,433.91
  4. Step 4: Simplify right side
    13,721.54x = 140,765,174.50
  5. Step 5: Solve for x
    x = 140,765,174.50/13,721.54
  6. Step 6: Final answer
    x = 10,258.70

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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.