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Finding the Fourth Proportional to 28,999.37, 40,018.47 and 16,899.09

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Solution

The fourth proportional to 28,999.37, 40,018.47 and 16,899.09 is: 23,320.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.37 : 40,018.47 = 16,899.09 : x
  2. Step 2: Convert to fraction form
    28,999.37/40,018.47 = 16,899.09/x
  3. Step 3: Cross multiply
    28,999.37x = 40,018.47 × 16,899.09
  4. Step 4: Simplify right side
    28,999.37x = 676,275,512.75
  5. Step 5: Solve for x
    x = 676,275,512.75/28,999.37
  6. Step 6: Final answer
    x = 23,320.35

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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.