Home / 20,303.15-28,018.96-11,351.03

Finding the Fourth Proportional to 20,303.15, 28,018.96 and 11,351.03

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Solution

The fourth proportional to 20,303.15, 28,018.96 and 11,351.03 is: 15,664.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.15 : 28,018.96 = 11,351.03 : x
  2. Step 2: Convert to fraction form
    20,303.15/28,018.96 = 11,351.03/x
  3. Step 3: Cross multiply
    20,303.15x = 28,018.96 × 11,351.03
  4. Step 4: Simplify right side
    20,303.15x = 318,043,887.06
  5. Step 5: Solve for x
    x = 318,043,887.06/20,303.15
  6. Step 6: Final answer
    x = 15,664.76

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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.