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Finding the Fourth Proportional to 13,671.19, 20,506.79 and 4,437.19

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Solution

The fourth proportional to 13,671.19, 20,506.79 and 4,437.19 is: 6,655.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.19 : 20,506.79 = 4,437.19 : x
  2. Step 2: Convert to fraction form
    13,671.19/20,506.79 = 4,437.19/x
  3. Step 3: Cross multiply
    13,671.19x = 20,506.79 × 4,437.19
  4. Step 4: Simplify right side
    13,671.19x = 90,992,450.07
  5. Step 5: Solve for x
    x = 90,992,450.07/13,671.19
  6. Step 6: Final answer
    x = 6,655.78

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1.5x scale

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.