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Finding the Fourth Proportional to 14,340.89, 19,788.21 and 8,208.11

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Solution

The fourth proportional to 14,340.89, 19,788.21 and 8,208.11 is: 11,325.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.89 : 19,788.21 = 8,208.11 : x
  2. Step 2: Convert to fraction form
    14,340.89/19,788.21 = 8,208.11/x
  3. Step 3: Cross multiply
    14,340.89x = 19,788.21 × 8,208.11
  4. Step 4: Simplify right side
    14,340.89x = 162,423,705.44
  5. Step 5: Solve for x
    x = 162,423,705.44/14,340.89
  6. Step 6: Final answer
    x = 11,325.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.