Home / 20,028.09-27,639.98-11,075.40

Finding the Fourth Proportional to 20,028.09, 27,639.98 and 11,075.40

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Solution

The fourth proportional to 20,028.09, 27,639.98 and 11,075.40 is: 15,284.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,028.09 : 27,639.98 = 11,075.40 : x
  2. Step 2: Convert to fraction form
    20,028.09/27,639.98 = 11,075.40/x
  3. Step 3: Cross multiply
    20,028.09x = 27,639.98 × 11,075.40
  4. Step 4: Simplify right side
    20,028.09x = 306,123,779.12
  5. Step 5: Solve for x
    x = 306,123,779.12/20,028.09
  6. Step 6: Final answer
    x = 15,284.72

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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.