Home / 28,669.60-43,004.40-7,895.20

Finding the Fourth Proportional to 28,669.60, 43,004.40 and 7,895.20

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Solution

The fourth proportional to 28,669.60, 43,004.40 and 7,895.20 is: 11,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.60 : 43,004.40 = 7,895.20 : x
  2. Step 2: Convert to fraction form
    28,669.60/43,004.40 = 7,895.20/x
  3. Step 3: Cross multiply
    28,669.60x = 43,004.40 × 7,895.20
  4. Step 4: Simplify right side
    28,669.60x = 339,528,338.88
  5. Step 5: Solve for x
    x = 339,528,338.88/28,669.60
  6. Step 6: Final answer
    x = 11,842.80

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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.