Home / 12,127.24-18,190.86-7,513.48

Finding the Fourth Proportional to 12,127.24, 18,190.86 and 7,513.48

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Solution

The fourth proportional to 12,127.24, 18,190.86 and 7,513.48 is: 11,270.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127.24 : 18,190.86 = 7,513.48 : x
  2. Step 2: Convert to fraction form
    12,127.24/18,190.86 = 7,513.48/x
  3. Step 3: Cross multiply
    12,127.24x = 18,190.86 × 7,513.48
  4. Step 4: Simplify right side
    12,127.24x = 136,676,662.79
  5. Step 5: Solve for x
    x = 136,676,662.79/12,127.24
  6. Step 6: Final answer
    x = 11,270.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.