Home / 13,909.38-19,197.21-7,941.30

Finding the Fourth Proportional to 13,909.38, 19,197.21 and 7,941.30

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Solution

The fourth proportional to 13,909.38, 19,197.21 and 7,941.30 is: 10,960.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.38 : 19,197.21 = 7,941.30 : x
  2. Step 2: Convert to fraction form
    13,909.38/19,197.21 = 7,941.30/x
  3. Step 3: Cross multiply
    13,909.38x = 19,197.21 × 7,941.30
  4. Step 4: Simplify right side
    13,909.38x = 152,450,803.77
  5. Step 5: Solve for x
    x = 152,450,803.77/13,909.38
  6. Step 6: Final answer
    x = 10,960.29

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Half scale
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Double scale
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Similar ratio
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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.