Home / 20,303.55-28,018.97-11,351.22

Finding the Fourth Proportional to 20,303.55, 28,018.97 and 11,351.22

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Solution

The fourth proportional to 20,303.55, 28,018.97 and 11,351.22 is: 15,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.55 : 28,018.97 = 11,351.22 : x
  2. Step 2: Convert to fraction form
    20,303.55/28,018.97 = 11,351.22/x
  3. Step 3: Cross multiply
    20,303.55x = 28,018.97 × 11,351.22
  4. Step 4: Simplify right side
    20,303.55x = 318,049,435.89
  5. Step 5: Solve for x
    x = 318,049,435.89/20,303.55
  6. Step 6: Final answer
    x = 15,664.72

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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.