Home / 20,673.53-28,529.31-11,242.08

Finding the Fourth Proportional to 20,673.53, 28,529.31 and 11,242.08

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Solution

The fourth proportional to 20,673.53, 28,529.31 and 11,242.08 is: 15,513.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.53 : 28,529.31 = 11,242.08 : x
  2. Step 2: Convert to fraction form
    20,673.53/28,529.31 = 11,242.08/x
  3. Step 3: Cross multiply
    20,673.53x = 28,529.31 × 11,242.08
  4. Step 4: Simplify right side
    20,673.53x = 320,728,785.36
  5. Step 5: Solve for x
    x = 320,728,785.36/20,673.53
  6. Step 6: Final answer
    x = 15,513.99

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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.