Home / 13,319.63-18,388.46-8,015.75

Finding the Fourth Proportional to 13,319.63, 18,388.46 and 8,015.75

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Solution

The fourth proportional to 13,319.63, 18,388.46 and 8,015.75 is: 11,066.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.63 : 18,388.46 = 8,015.75 : x
  2. Step 2: Convert to fraction form
    13,319.63/18,388.46 = 8,015.75/x
  3. Step 3: Cross multiply
    13,319.63x = 18,388.46 × 8,015.75
  4. Step 4: Simplify right side
    13,319.63x = 147,397,258.17
  5. Step 5: Solve for x
    x = 147,397,258.17/13,319.63
  6. Step 6: Final answer
    x = 11,066.17

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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.