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Finding the Fourth Proportional to 10,858.29, 14,986.05 and 6,879.77

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Solution

The fourth proportional to 10,858.29, 14,986.05 and 6,879.77 is: 9,495.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,858.29 : 14,986.05 = 6,879.77 : x
  2. Step 2: Convert to fraction form
    10,858.29/14,986.05 = 6,879.77/x
  3. Step 3: Cross multiply
    10,858.29x = 14,986.05 × 6,879.77
  4. Step 4: Simplify right side
    10,858.29x = 103,100,532.68
  5. Step 5: Solve for x
    x = 103,100,532.68/10,858.29
  6. Step 6: Final answer
    x = 9,495.10

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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.