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Finding the Fourth Proportional to 28,887.57, 39,865.52 and 16,959.51

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Solution

The fourth proportional to 28,887.57, 39,865.52 and 16,959.51 is: 23,404.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887.57 : 39,865.52 = 16,959.51 : x
  2. Step 2: Convert to fraction form
    28,887.57/39,865.52 = 16,959.51/x
  3. Step 3: Cross multiply
    28,887.57x = 39,865.52 × 16,959.51
  4. Step 4: Simplify right side
    28,887.57x = 676,099,600.30
  5. Step 5: Solve for x
    x = 676,099,600.30/28,887.57
  6. Step 6: Final answer
    x = 23,404.52

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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.