Home / 13,287.54-18,336.72-7,319.07

Finding the Fourth Proportional to 13,287.54, 18,336.72 and 7,319.07

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Solution

The fourth proportional to 13,287.54, 18,336.72 and 7,319.07 is: 10,100.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,287.54 : 18,336.72 = 7,319.07 : x
  2. Step 2: Convert to fraction form
    13,287.54/18,336.72 = 7,319.07/x
  3. Step 3: Cross multiply
    13,287.54x = 18,336.72 × 7,319.07
  4. Step 4: Simplify right side
    13,287.54x = 134,207,737.25
  5. Step 5: Solve for x
    x = 134,207,737.25/13,287.54
  6. Step 6: Final answer
    x = 10,100.27

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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.