Home / 11,535.10-17,239.44-8,421.66

Finding the Fourth Proportional to 11,535.10, 17,239.44 and 8,421.66

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Solution

The fourth proportional to 11,535.10, 17,239.44 and 8,421.66 is: 12,586.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,535.10 : 17,239.44 = 8,421.66 : x
  2. Step 2: Convert to fraction form
    11,535.10/17,239.44 = 8,421.66/x
  3. Step 3: Cross multiply
    11,535.10x = 17,239.44 × 8,421.66
  4. Step 4: Simplify right side
    11,535.10x = 145,184,758.65
  5. Step 5: Solve for x
    x = 145,184,758.65/11,535.10
  6. Step 6: Final answer
    x = 12,586.35

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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 (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.