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Finding the Fourth Proportional to 10,063.69, 13,878.79 and 6,287.20

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Solution

The fourth proportional to 10,063.69, 13,878.79 and 6,287.20 is: 8,670.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,063.69 : 13,878.79 = 6,287.20 : x
  2. Step 2: Convert to fraction form
    10,063.69/13,878.79 = 6,287.20/x
  3. Step 3: Cross multiply
    10,063.69x = 13,878.79 × 6,287.20
  4. Step 4: Simplify right side
    10,063.69x = 87,258,728.49
  5. Step 5: Solve for x
    x = 87,258,728.49/10,063.69
  6. Step 6: Final answer
    x = 8,670.65

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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.