Home / 13,195.90-18,212.40-7,530.64

Finding the Fourth Proportional to 13,195.90, 18,212.40 and 7,530.64

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Solution

The fourth proportional to 13,195.90, 18,212.40 and 7,530.64 is: 10,393.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.90 : 18,212.40 = 7,530.64 : x
  2. Step 2: Convert to fraction form
    13,195.90/18,212.40 = 7,530.64/x
  3. Step 3: Cross multiply
    13,195.90x = 18,212.40 × 7,530.64
  4. Step 4: Simplify right side
    13,195.90x = 137,151,027.94
  5. Step 5: Solve for x
    x = 137,151,027.94/13,195.90
  6. Step 6: Final answer
    x = 10,393.46

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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.