Home / 20,544.28-30,804.90-13,979.32

Finding the Fourth Proportional to 20,544.28, 30,804.90 and 13,979.32

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Solution

The fourth proportional to 20,544.28, 30,804.90 and 13,979.32 is: 20,961.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.28 : 30,804.90 = 13,979.32 : x
  2. Step 2: Convert to fraction form
    20,544.28/30,804.90 = 13,979.32/x
  3. Step 3: Cross multiply
    20,544.28x = 30,804.90 × 13,979.32
  4. Step 4: Simplify right side
    20,544.28x = 430,631,554.67
  5. Step 5: Solve for x
    x = 430,631,554.67/20,544.28
  6. Step 6: Final answer
    x = 20,961.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.