Home / 13,336.97-18,405.05-7,287.28

Finding the Fourth Proportional to 13,336.97, 18,405.05 and 7,287.28

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Solution

The fourth proportional to 13,336.97, 18,405.05 and 7,287.28 is: 10,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,336.97 : 18,405.05 = 7,287.28 : x
  2. Step 2: Convert to fraction form
    13,336.97/18,405.05 = 7,287.28/x
  3. Step 3: Cross multiply
    13,336.97x = 18,405.05 × 7,287.28
  4. Step 4: Simplify right side
    13,336.97x = 134,122,670.31
  5. Step 5: Solve for x
    x = 134,122,670.31/13,336.97
  6. Step 6: Final answer
    x = 10,056.46

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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.