Home / 13,516.80-20,261.40-9,134.70

Finding the Fourth Proportional to 13,516.80, 20,261.40 and 9,134.70

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Solution

The fourth proportional to 13,516.80, 20,261.40 and 9,134.70 is: 13,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.80 : 20,261.40 = 9,134.70 : x
  2. Step 2: Convert to fraction form
    13,516.80/20,261.40 = 9,134.70/x
  3. Step 3: Cross multiply
    13,516.80x = 20,261.40 × 9,134.70
  4. Step 4: Simplify right side
    13,516.80x = 185,081,810.58
  5. Step 5: Solve for x
    x = 185,081,810.58/13,516.80
  6. Step 6: Final answer
    x = 13,692.72

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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.