Home / 13,287.24-18,336.54-7,318.79

Finding the Fourth Proportional to 13,287.24, 18,336.54 and 7,318.79

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Solution

The fourth proportional to 13,287.24, 18,336.54 and 7,318.79 is: 10,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.24 : 18,336.54 = 7,318.79 : x
  2. Step 2: Convert to fraction form
    13,287.24/18,336.54 = 7,318.79/x
  3. Step 3: Cross multiply
    13,287.24x = 18,336.54 × 7,318.79
  4. Step 4: Simplify right side
    13,287.24x = 134,201,193.90
  5. Step 5: Solve for x
    x = 134,201,193.90/13,287.24
  6. Step 6: Final answer
    x = 10,100.01

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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.