Home / 13,238.56-18,267.76-7,572.80

Finding the Fourth Proportional to 13,238.56, 18,267.76 and 7,572.80

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Solution

The fourth proportional to 13,238.56, 18,267.76 and 7,572.80 is: 10,449.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,238.56 : 18,267.76 = 7,572.80 : x
  2. Step 2: Convert to fraction form
    13,238.56/18,267.76 = 7,572.80/x
  3. Step 3: Cross multiply
    13,238.56x = 18,267.76 × 7,572.80
  4. Step 4: Simplify right side
    13,238.56x = 138,338,092.93
  5. Step 5: Solve for x
    x = 138,338,092.93/13,238.56
  6. Step 6: Final answer
    x = 10,449.63

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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.