Home / 22,378.80-30,883.64-12,820.26

Finding the Fourth Proportional to 22,378.80, 30,883.64 and 12,820.26

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Solution

The fourth proportional to 22,378.80, 30,883.64 and 12,820.26 is: 17,692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.80 : 30,883.64 = 12,820.26 : x
  2. Step 2: Convert to fraction form
    22,378.80/30,883.64 = 12,820.26/x
  3. Step 3: Cross multiply
    22,378.80x = 30,883.64 × 12,820.26
  4. Step 4: Simplify right side
    22,378.80x = 395,936,294.55
  5. Step 5: Solve for x
    x = 395,936,294.55/22,378.80
  6. Step 6: Final answer
    x = 17,692.47

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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.