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Finding the Fourth Proportional to 13,473.84, 18,672.41 and 13,285.68

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Solution

The fourth proportional to 13,473.84, 18,672.41 and 13,285.68 is: 18,411.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,473.84 : 18,672.41 = 13,285.68 : x
  2. Step 2: Convert to fraction form
    13,473.84/18,672.41 = 13,285.68/x
  3. Step 3: Cross multiply
    13,473.84x = 18,672.41 × 13,285.68
  4. Step 4: Simplify right side
    13,473.84x = 248,075,664.09
  5. Step 5: Solve for x
    x = 248,075,664.09/13,473.84
  6. Step 6: Final answer
    x = 18,411.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.