Home / 20,322.36-28,045.28-12,256.00

Finding the Fourth Proportional to 20,322.36, 28,045.28 and 12,256.00

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Solution

The fourth proportional to 20,322.36, 28,045.28 and 12,256.00 is: 16,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,322.36 : 28,045.28 = 12,256.00 : x
  2. Step 2: Convert to fraction form
    20,322.36/28,045.28 = 12,256.00/x
  3. Step 3: Cross multiply
    20,322.36x = 28,045.28 × 12,256.00
  4. Step 4: Simplify right side
    20,322.36x = 343,722,912.21
  5. Step 5: Solve for x
    x = 343,722,912.21/20,322.36
  6. Step 6: Final answer
    x = 16,913.53

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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.