Home / 20,075.32-27,702.84-11,122.68

Finding the Fourth Proportional to 20,075.32, 27,702.84 and 11,122.68

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Solution

The fourth proportional to 20,075.32, 27,702.84 and 11,122.68 is: 15,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.32 : 27,702.84 = 11,122.68 : x
  2. Step 2: Convert to fraction form
    20,075.32/27,702.84 = 11,122.68/x
  3. Step 3: Cross multiply
    20,075.32x = 27,702.84 × 11,122.68
  4. Step 4: Simplify right side
    20,075.32x = 308,129,824.41
  5. Step 5: Solve for x
    x = 308,129,824.41/20,075.32
  6. Step 6: Final answer
    x = 15,348.69

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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.