Home / 20,243.65-27,936.28-11,290.92

Finding the Fourth Proportional to 20,243.65, 27,936.28 and 11,290.92

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Solution

The fourth proportional to 20,243.65, 27,936.28 and 11,290.92 is: 15,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,243.65 : 27,936.28 = 11,290.92 : x
  2. Step 2: Convert to fraction form
    20,243.65/27,936.28 = 11,290.92/x
  3. Step 3: Cross multiply
    20,243.65x = 27,936.28 × 11,290.92
  4. Step 4: Simplify right side
    20,243.65x = 315,426,421.45
  5. Step 5: Solve for x
    x = 315,426,421.45/20,243.65
  6. Step 6: Final answer
    x = 15,581.50

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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.