Home / 20,189.13-27,862.80-11,238.63

Finding the Fourth Proportional to 20,189.13, 27,862.80 and 11,238.63

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Solution

The fourth proportional to 20,189.13, 27,862.80 and 11,238.63 is: 15,510.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.13 : 27,862.80 = 11,238.63 : x
  2. Step 2: Convert to fraction form
    20,189.13/27,862.80 = 11,238.63/x
  3. Step 3: Cross multiply
    20,189.13x = 27,862.80 × 11,238.63
  4. Step 4: Simplify right side
    20,189.13x = 313,139,699.96
  5. Step 5: Solve for x
    x = 313,139,699.96/20,189.13
  6. Step 6: Final answer
    x = 15,510.31

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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.