Home / 29,900.64-40,964.07-28,779.60

Finding the Fourth Proportional to 29,900.64, 40,964.07 and 28,779.60

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Solution

The fourth proportional to 29,900.64, 40,964.07 and 28,779.60 is: 39,428.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,900.64 : 40,964.07 = 28,779.60 : x
  2. Step 2: Convert to fraction form
    29,900.64/40,964.07 = 28,779.60/x
  3. Step 3: Cross multiply
    29,900.64x = 40,964.07 × 28,779.60
  4. Step 4: Simplify right side
    29,900.64x = 1,178,929,548.97
  5. Step 5: Solve for x
    x = 1,178,929,548.97/29,900.64
  6. Step 6: Final answer
    x = 39,428.24

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.