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Finding the Fourth Proportional to 18,999.36, 28,488.11 and 5,848.20

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Solution

The fourth proportional to 18,999.36, 28,488.11 and 5,848.20 is: 8,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,999.36 : 28,488.11 = 5,848.20 : x
  2. Step 2: Convert to fraction form
    18,999.36/28,488.11 = 5,848.20/x
  3. Step 3: Cross multiply
    18,999.36x = 28,488.11 × 5,848.20
  4. Step 4: Simplify right side
    18,999.36x = 166,604,135.66
  5. Step 5: Solve for x
    x = 166,604,135.66/18,999.36
  6. Step 6: Final answer
    x = 8,768.93

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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.