Home / 28,918.60-43,397.10-16,438.60

Finding the Fourth Proportional to 28,918.60, 43,397.10 and 16,438.60

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Solution

The fourth proportional to 28,918.60, 43,397.10 and 16,438.60 is: 24,668.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.60 : 43,397.10 = 16,438.60 : x
  2. Step 2: Convert to fraction form
    28,918.60/43,397.10 = 16,438.60/x
  3. Step 3: Cross multiply
    28,918.60x = 43,397.10 × 16,438.60
  4. Step 4: Simplify right side
    28,918.60x = 713,387,568.06
  5. Step 5: Solve for x
    x = 713,387,568.06/28,918.60
  6. Step 6: Final answer
    x = 24,668.81

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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.