Home / 12,933.60-19,419.60-9,055.20

Finding the Fourth Proportional to 12,933.60, 19,419.60 and 9,055.20

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Solution

The fourth proportional to 12,933.60, 19,419.60 and 9,055.20 is: 13,596.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,933.60 : 19,419.60 = 9,055.20 : x
  2. Step 2: Convert to fraction form
    12,933.60/19,419.60 = 9,055.20/x
  3. Step 3: Cross multiply
    12,933.60x = 19,419.60 × 9,055.20
  4. Step 4: Simplify right side
    12,933.60x = 175,848,361.92
  5. Step 5: Solve for x
    x = 175,848,361.92/12,933.60
  6. Step 6: Final answer
    x = 13,596.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.