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Finding the Fourth Proportional to 28,629.45, 39,495.03 and 19,073.78

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Solution

The fourth proportional to 28,629.45, 39,495.03 and 19,073.78 is: 26,312.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.45 : 39,495.03 = 19,073.78 : x
  2. Step 2: Convert to fraction form
    28,629.45/39,495.03 = 19,073.78/x
  3. Step 3: Cross multiply
    28,629.45x = 39,495.03 × 19,073.78
  4. Step 4: Simplify right side
    28,629.45x = 753,319,513.31
  5. Step 5: Solve for x
    x = 753,319,513.31/28,629.45
  6. Step 6: Final answer
    x = 26,312.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.