Home / 20,075.39-27,702.41-11,123.27

Finding the Fourth Proportional to 20,075.39, 27,702.41 and 11,123.27

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Solution

The fourth proportional to 20,075.39, 27,702.41 and 11,123.27 is: 15,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.39 : 27,702.41 = 11,123.27 : x
  2. Step 2: Convert to fraction form
    20,075.39/27,702.41 = 11,123.27/x
  3. Step 3: Cross multiply
    20,075.39x = 27,702.41 × 11,123.27
  4. Step 4: Simplify right side
    20,075.39x = 308,141,191.95
  5. Step 5: Solve for x
    x = 308,141,191.95/20,075.39
  6. Step 6: Final answer
    x = 15,349.20

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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.