Home / 18,609.72-25,670.70-11,153.40

Finding the Fourth Proportional to 18,609.72, 25,670.70 and 11,153.40

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Solution

The fourth proportional to 18,609.72, 25,670.70 and 11,153.40 is: 15,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,609.72 : 25,670.70 = 11,153.40 : x
  2. Step 2: Convert to fraction form
    18,609.72/25,670.70 = 11,153.40/x
  3. Step 3: Cross multiply
    18,609.72x = 25,670.70 × 11,153.40
  4. Step 4: Simplify right side
    18,609.72x = 286,315,585.38
  5. Step 5: Solve for x
    x = 286,315,585.38/18,609.72
  6. Step 6: Final answer
    x = 15,385.27

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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.