Home / 13,229.81-18,256.55-7,261.49

Finding the Fourth Proportional to 13,229.81, 18,256.55 and 7,261.49

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Solution

The fourth proportional to 13,229.81, 18,256.55 and 7,261.49 is: 10,020.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.81 : 18,256.55 = 7,261.49 : x
  2. Step 2: Convert to fraction form
    13,229.81/18,256.55 = 7,261.49/x
  3. Step 3: Cross multiply
    13,229.81x = 18,256.55 × 7,261.49
  4. Step 4: Simplify right side
    13,229.81x = 132,569,755.26
  5. Step 5: Solve for x
    x = 132,569,755.26/13,229.81
  6. Step 6: Final answer
    x = 10,020.53

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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.