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Finding the Fourth Proportional to 30,128.88, 41,577.60 and 16,700.88

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Solution

The fourth proportional to 30,128.88, 41,577.60 and 16,700.88 is: 23,047.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,128.88 : 41,577.60 = 16,700.88 : x
  2. Step 2: Convert to fraction form
    30,128.88/41,577.60 = 16,700.88/x
  3. Step 3: Cross multiply
    30,128.88x = 41,577.60 × 16,700.88
  4. Step 4: Simplify right side
    30,128.88x = 694,382,508.29
  5. Step 5: Solve for x
    x = 694,382,508.29/30,128.88
  6. Step 6: Final answer
    x = 23,047.07

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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.