Home / 28,485.36-42,719.96-11,824.80

Finding the Fourth Proportional to 28,485.36, 42,719.96 and 11,824.80

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Solution

The fourth proportional to 28,485.36, 42,719.96 and 11,824.80 is: 17,733.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.36 : 42,719.96 = 11,824.80 : x
  2. Step 2: Convert to fraction form
    28,485.36/42,719.96 = 11,824.80/x
  3. Step 3: Cross multiply
    28,485.36x = 42,719.96 × 11,824.80
  4. Step 4: Simplify right side
    28,485.36x = 505,154,983.01
  5. Step 5: Solve for x
    x = 505,154,983.01/28,485.36
  6. Step 6: Final answer
    x = 17,733.85

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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.