Home / 13,287.24-18,336.36-7,319.31

Finding the Fourth Proportional to 13,287.24, 18,336.36 and 7,319.31

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Solution

The fourth proportional to 13,287.24, 18,336.36 and 7,319.31 is: 10,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.24 : 18,336.36 = 7,319.31 : x
  2. Step 2: Convert to fraction form
    13,287.24/18,336.36 = 7,319.31/x
  3. Step 3: Cross multiply
    13,287.24x = 18,336.36 × 7,319.31
  4. Step 4: Simplify right side
    13,287.24x = 134,209,503.11
  5. Step 5: Solve for x
    x = 134,209,503.11/13,287.24
  6. Step 6: Final answer
    x = 10,100.63

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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.