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Finding the Fourth Proportional to 19,269.36, 28,903.89 and 9,912

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Solution

The fourth proportional to 19,269.36, 28,903.89 and 9,912 is: 14,867.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,269.36 : 28,903.89 = 9,912 : x
  2. Step 2: Convert to fraction form
    19,269.36/28,903.89 = 9,912/x
  3. Step 3: Cross multiply
    19,269.36x = 28,903.89 × 9,912
  4. Step 4: Simplify right side
    19,269.36x = 286,495,357.68
  5. Step 5: Solve for x
    x = 286,495,357.68/19,269.36
  6. Step 6: Final answer
    x = 14,867.92

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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.