Home / 20,271.03-27,972.69-11,319.36

Finding the Fourth Proportional to 20,271.03, 27,972.69 and 11,319.36

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Solution

The fourth proportional to 20,271.03, 27,972.69 and 11,319.36 is: 15,619.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.03 : 27,972.69 = 11,319.36 : x
  2. Step 2: Convert to fraction form
    20,271.03/27,972.69 = 11,319.36/x
  3. Step 3: Cross multiply
    20,271.03x = 27,972.69 × 11,319.36
  4. Step 4: Simplify right side
    20,271.03x = 316,632,948.28
  5. Step 5: Solve for x
    x = 316,632,948.28/20,271.03
  6. Step 6: Final answer
    x = 15,619.97

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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.