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Finding the Fourth Proportional to 36,259, 54,388.86 and 12,886.36

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Solution

The fourth proportional to 36,259, 54,388.86 and 12,886.36 is: 19,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,259 : 54,388.86 = 12,886.36 : x
  2. Step 2: Convert to fraction form
    36,259/54,388.86 = 12,886.36/x
  3. Step 3: Cross multiply
    36,259x = 54,388.86 × 12,886.36
  4. Step 4: Simplify right side
    36,259x = 700,874,429.95
  5. Step 5: Solve for x
    x = 700,874,429.95/36,259
  6. Step 6: Final answer
    x = 19,329.67

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Double scale
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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.