Home / 19,188.36-28,729.40-9,808.19

Finding the Fourth Proportional to 19,188.36, 28,729.40 and 9,808.19

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Solution

The fourth proportional to 19,188.36, 28,729.40 and 9,808.19 is: 14,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,188.36 : 28,729.40 = 9,808.19 : x
  2. Step 2: Convert to fraction form
    19,188.36/28,729.40 = 9,808.19/x
  3. Step 3: Cross multiply
    19,188.36x = 28,729.40 × 9,808.19
  4. Step 4: Simplify right side
    19,188.36x = 281,783,221.10
  5. Step 5: Solve for x
    x = 281,783,221.10/19,188.36
  6. Step 6: Final answer
    x = 14,685.11

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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.