Home / 20,075.55-27,703.10-11,122.52

Finding the Fourth Proportional to 20,075.55, 27,703.10 and 11,122.52

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Solution

The fourth proportional to 20,075.55, 27,703.10 and 11,122.52 is: 15,348.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.55 : 27,703.10 = 11,122.52 : x
  2. Step 2: Convert to fraction form
    20,075.55/27,703.10 = 11,122.52/x
  3. Step 3: Cross multiply
    20,075.55x = 27,703.10 × 11,122.52
  4. Step 4: Simplify right side
    20,075.55x = 308,128,283.81
  5. Step 5: Solve for x
    x = 308,128,283.81/20,075.55
  6. Step 6: Final answer
    x = 15,348.44

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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.