Home / 13,721.40-18,935.55-7,433.77

Finding the Fourth Proportional to 13,721.40, 18,935.55 and 7,433.77

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Solution

The fourth proportional to 13,721.40, 18,935.55 and 7,433.77 is: 10,258.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.40 : 18,935.55 = 7,433.77 : x
  2. Step 2: Convert to fraction form
    13,721.40/18,935.55 = 7,433.77/x
  3. Step 3: Cross multiply
    13,721.40x = 18,935.55 × 7,433.77
  4. Step 4: Simplify right side
    13,721.40x = 140,762,486.35
  5. Step 5: Solve for x
    x = 140,762,486.35/13,721.40
  6. Step 6: Final answer
    x = 10,258.61

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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.