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Finding the Fourth Proportional to 18,899, 28,349.70 and 5,752.34

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Solution

The fourth proportional to 18,899, 28,349.70 and 5,752.34 is: 8,628.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899 : 28,349.70 = 5,752.34 : x
  2. Step 2: Convert to fraction form
    18,899/28,349.70 = 5,752.34/x
  3. Step 3: Cross multiply
    18,899x = 28,349.70 × 5,752.34
  4. Step 4: Simplify right side
    18,899x = 163,077,113.30
  5. Step 5: Solve for x
    x = 163,077,113.30/18,899
  6. Step 6: Final answer
    x = 8,628.88

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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.