Home / 20,255.70-27,952.80-11,303.11

Finding the Fourth Proportional to 20,255.70, 27,952.80 and 11,303.11

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Solution

The fourth proportional to 20,255.70, 27,952.80 and 11,303.11 is: 15,598.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.70 : 27,952.80 = 11,303.11 : x
  2. Step 2: Convert to fraction form
    20,255.70/27,952.80 = 11,303.11/x
  3. Step 3: Cross multiply
    20,255.70x = 27,952.80 × 11,303.11
  4. Step 4: Simplify right side
    20,255.70x = 315,953,433.44
  5. Step 5: Solve for x
    x = 315,953,433.44/20,255.70
  6. Step 6: Final answer
    x = 15,598.25

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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.