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Finding the Fourth Proportional to 12,810.10, 19,201.98 and 4,910.48

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Solution

The fourth proportional to 12,810.10, 19,201.98 and 4,910.48 is: 7,360.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,810.10 : 19,201.98 = 4,910.48 : x
  2. Step 2: Convert to fraction form
    12,810.10/19,201.98 = 4,910.48/x
  3. Step 3: Cross multiply
    12,810.10x = 19,201.98 × 4,910.48
  4. Step 4: Simplify right side
    12,810.10x = 94,290,938.75
  5. Step 5: Solve for x
    x = 94,290,938.75/12,810.10
  6. Step 6: Final answer
    x = 7,360.67

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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.