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Finding the Fourth Proportional to 18,755.63, 28,133.71 and 4,904.63

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Solution

The fourth proportional to 18,755.63, 28,133.71 and 4,904.63 is: 7,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.63 : 28,133.71 = 4,904.63 : x
  2. Step 2: Convert to fraction form
    18,755.63/28,133.71 = 4,904.63/x
  3. Step 3: Cross multiply
    18,755.63x = 28,133.71 × 4,904.63
  4. Step 4: Simplify right side
    18,755.63x = 137,985,285.15
  5. Step 5: Solve for x
    x = 137,985,285.15/18,755.63
  6. Step 6: Final answer
    x = 7,357.01

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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.