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Finding the Fourth Proportional to 13,907.08, 20,827.68 and 10,965.70

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Solution

The fourth proportional to 13,907.08, 20,827.68 and 10,965.70 is: 16,422.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.08 : 20,827.68 = 10,965.70 : x
  2. Step 2: Convert to fraction form
    13,907.08/20,827.68 = 10,965.70/x
  3. Step 3: Cross multiply
    13,907.08x = 20,827.68 × 10,965.70
  4. Step 4: Simplify right side
    13,907.08x = 228,390,090.58
  5. Step 5: Solve for x
    x = 228,390,090.58/13,907.08
  6. Step 6: Final answer
    x = 16,422.58

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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.