Home / 13,121.60-18,087.60-10,464.80

Finding the Fourth Proportional to 13,121.60, 18,087.60 and 10,464.80

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Solution

The fourth proportional to 13,121.60, 18,087.60 and 10,464.80 is: 14,425.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.60 : 18,087.60 = 10,464.80 : x
  2. Step 2: Convert to fraction form
    13,121.60/18,087.60 = 10,464.80/x
  3. Step 3: Cross multiply
    13,121.60x = 18,087.60 × 10,464.80
  4. Step 4: Simplify right side
    13,121.60x = 189,283,116.48
  5. Step 5: Solve for x
    x = 189,283,116.48/13,121.60
  6. Step 6: Final answer
    x = 14,425.31

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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.