Home / 19,663.12-27,127.05-11,163.40

Finding the Fourth Proportional to 19,663.12, 27,127.05 and 11,163.40

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Solution

The fourth proportional to 19,663.12, 27,127.05 and 11,163.40 is: 15,400.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,663.12 : 27,127.05 = 11,163.40 : x
  2. Step 2: Convert to fraction form
    19,663.12/27,127.05 = 11,163.40/x
  3. Step 3: Cross multiply
    19,663.12x = 27,127.05 × 11,163.40
  4. Step 4: Simplify right side
    19,663.12x = 302,830,109.97
  5. Step 5: Solve for x
    x = 302,830,109.97/19,663.12
  6. Step 6: Final answer
    x = 15,400.92

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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.