Home / 20,027.28-27,639.66-11,075.46

Finding the Fourth Proportional to 20,027.28, 27,639.66 and 11,075.46

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Solution

The fourth proportional to 20,027.28, 27,639.66 and 11,075.46 is: 15,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,027.28 : 27,639.66 = 11,075.46 : x
  2. Step 2: Convert to fraction form
    20,027.28/27,639.66 = 11,075.46/x
  3. Step 3: Cross multiply
    20,027.28x = 27,639.66 × 11,075.46
  4. Step 4: Simplify right side
    20,027.28x = 306,121,948.74
  5. Step 5: Solve for x
    x = 306,121,948.74/20,027.28
  6. Step 6: Final answer
    x = 15,285.25

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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.