Home / 28,361.49-39,135.46-16,423.20

Finding the Fourth Proportional to 28,361.49, 39,135.46 and 16,423.20

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Solution

The fourth proportional to 28,361.49, 39,135.46 and 16,423.20 is: 22,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,361.49 : 39,135.46 = 16,423.20 : x
  2. Step 2: Convert to fraction form
    28,361.49/39,135.46 = 16,423.20/x
  3. Step 3: Cross multiply
    28,361.49x = 39,135.46 × 16,423.20
  4. Step 4: Simplify right side
    28,361.49x = 642,729,486.67
  5. Step 5: Solve for x
    x = 642,729,486.67/28,361.49
  6. Step 6: Final answer
    x = 22,662.05

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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.