Home / 20,235.66-27,949.59-15,222.30

Finding the Fourth Proportional to 20,235.66, 27,949.59 and 15,222.30

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Solution

The fourth proportional to 20,235.66, 27,949.59 and 15,222.30 is: 21,025.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,235.66 : 27,949.59 = 15,222.30 : x
  2. Step 2: Convert to fraction form
    20,235.66/27,949.59 = 15,222.30/x
  3. Step 3: Cross multiply
    20,235.66x = 27,949.59 × 15,222.30
  4. Step 4: Simplify right side
    20,235.66x = 425,457,043.86
  5. Step 5: Solve for x
    x = 425,457,043.86/20,235.66
  6. Step 6: Final answer
    x = 21,025.11

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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.