Home / 20,075.31-27,703.52-11,122.79

Finding the Fourth Proportional to 20,075.31, 27,703.52 and 11,122.79

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Solution

The fourth proportional to 20,075.31, 27,703.52 and 11,122.79 is: 15,349.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.31 : 27,703.52 = 11,122.79 : x
  2. Step 2: Convert to fraction form
    20,075.31/27,703.52 = 11,122.79/x
  3. Step 3: Cross multiply
    20,075.31x = 27,703.52 × 11,122.79
  4. Step 4: Simplify right side
    20,075.31x = 308,140,282.80
  5. Step 5: Solve for x
    x = 308,140,282.80/20,075.31
  6. Step 6: Final answer
    x = 15,349.22

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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.