Home / 20,344.98-28,075.30-11,392.03

Finding the Fourth Proportional to 20,344.98, 28,075.30 and 11,392.03

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Solution

The fourth proportional to 20,344.98, 28,075.30 and 11,392.03 is: 15,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.98 : 28,075.30 = 11,392.03 : x
  2. Step 2: Convert to fraction form
    20,344.98/28,075.30 = 11,392.03/x
  3. Step 3: Cross multiply
    20,344.98x = 28,075.30 × 11,392.03
  4. Step 4: Simplify right side
    20,344.98x = 319,834,761.45
  5. Step 5: Solve for x
    x = 319,834,761.45/20,344.98
  6. Step 6: Final answer
    x = 15,720.57

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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.