Home / 13,142.24-18,142.80-8,366.93

Finding the Fourth Proportional to 13,142.24, 18,142.80 and 8,366.93

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Solution

The fourth proportional to 13,142.24, 18,142.80 and 8,366.93 is: 11,550.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.24 : 18,142.80 = 8,366.93 : x
  2. Step 2: Convert to fraction form
    13,142.24/18,142.80 = 8,366.93/x
  3. Step 3: Cross multiply
    13,142.24x = 18,142.80 × 8,366.93
  4. Step 4: Simplify right side
    13,142.24x = 151,799,537.60
  5. Step 5: Solve for x
    x = 151,799,537.60/13,142.24
  6. Step 6: Final answer
    x = 11,550.51

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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.