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Finding the Fourth Proportional to 28,668.75, 43,001.60 and 8,945.04

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Solution

The fourth proportional to 28,668.75, 43,001.60 and 8,945.04 is: 13,417.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,668.75 : 43,001.60 = 8,945.04 : x
  2. Step 2: Convert to fraction form
    28,668.75/43,001.60 = 8,945.04/x
  3. Step 3: Cross multiply
    28,668.75x = 43,001.60 × 8,945.04
  4. Step 4: Simplify right side
    28,668.75x = 384,651,148.59
  5. Step 5: Solve for x
    x = 384,651,148.59/28,668.75
  6. Step 6: Final answer
    x = 13,417.09

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1.5x scale

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.