Home / 13,130.96-18,121.18-7,466.64

Finding the Fourth Proportional to 13,130.96, 18,121.18 and 7,466.64

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Solution

The fourth proportional to 13,130.96, 18,121.18 and 7,466.64 is: 10,304.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130.96 : 18,121.18 = 7,466.64 : x
  2. Step 2: Convert to fraction form
    13,130.96/18,121.18 = 7,466.64/x
  3. Step 3: Cross multiply
    13,130.96x = 18,121.18 × 7,466.64
  4. Step 4: Simplify right side
    13,130.96x = 135,304,327.44
  5. Step 5: Solve for x
    x = 135,304,327.44/13,130.96
  6. Step 6: Final answer
    x = 10,304.22

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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.