Home / 20,333.36-28,051.80-12,369.20

Finding the Fourth Proportional to 20,333.36, 28,051.80 and 12,369.20

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Solution

The fourth proportional to 20,333.36, 28,051.80 and 12,369.20 is: 17,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.36 : 28,051.80 = 12,369.20 : x
  2. Step 2: Convert to fraction form
    20,333.36/28,051.80 = 12,369.20/x
  3. Step 3: Cross multiply
    20,333.36x = 28,051.80 × 12,369.20
  4. Step 4: Simplify right side
    20,333.36x = 346,978,324.56
  5. Step 5: Solve for x
    x = 346,978,324.56/20,333.36
  6. Step 6: Final answer
    x = 17,064.49

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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.