Home / 13,197.30-18,212.51-7,228.59

Finding the Fourth Proportional to 13,197.30, 18,212.51 and 7,228.59

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Solution

The fourth proportional to 13,197.30, 18,212.51 and 7,228.59 is: 9,975.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.30 : 18,212.51 = 7,228.59 : x
  2. Step 2: Convert to fraction form
    13,197.30/18,212.51 = 7,228.59/x
  3. Step 3: Cross multiply
    13,197.30x = 18,212.51 × 7,228.59
  4. Step 4: Simplify right side
    13,197.30x = 131,650,640.46
  5. Step 5: Solve for x
    x = 131,650,640.46/13,197.30
  6. Step 6: Final answer
    x = 9,975.57

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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.