Home / 20,361.16-28,112.16-13,193.20

Finding the Fourth Proportional to 20,361.16, 28,112.16 and 13,193.20

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Solution

The fourth proportional to 20,361.16, 28,112.16 and 13,193.20 is: 18,215.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.16 : 28,112.16 = 13,193.20 : x
  2. Step 2: Convert to fraction form
    20,361.16/28,112.16 = 13,193.20/x
  3. Step 3: Cross multiply
    20,361.16x = 28,112.16 × 13,193.20
  4. Step 4: Simplify right side
    20,361.16x = 370,889,349.31
  5. Step 5: Solve for x
    x = 370,889,349.31/20,361.16
  6. Step 6: Final answer
    x = 18,215.53

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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.