Home / 13,529.03-18,665.13-7,863.48

Finding the Fourth Proportional to 13,529.03, 18,665.13 and 7,863.48

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Solution

The fourth proportional to 13,529.03, 18,665.13 and 7,863.48 is: 10,848.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.03 : 18,665.13 = 7,863.48 : x
  2. Step 2: Convert to fraction form
    13,529.03/18,665.13 = 7,863.48/x
  3. Step 3: Cross multiply
    13,529.03x = 18,665.13 × 7,863.48
  4. Step 4: Simplify right side
    13,529.03x = 146,772,905.94
  5. Step 5: Solve for x
    x = 146,772,905.94/13,529.03
  6. Step 6: Final answer
    x = 10,848.74

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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.