Home / 20,021.31-27,628.98-11,069.19

Finding the Fourth Proportional to 20,021.31, 27,628.98 and 11,069.19

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Solution

The fourth proportional to 20,021.31, 27,628.98 and 11,069.19 is: 15,275.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,021.31 : 27,628.98 = 11,069.19 : x
  2. Step 2: Convert to fraction form
    20,021.31/27,628.98 = 11,069.19/x
  3. Step 3: Cross multiply
    20,021.31x = 27,628.98 × 11,069.19
  4. Step 4: Simplify right side
    20,021.31x = 305,830,429.13
  5. Step 5: Solve for x
    x = 305,830,429.13/20,021.31
  6. Step 6: Final answer
    x = 15,275.25

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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.