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Finding the Fourth Proportional to 14,664.76, 20,238.99 and 8,377.13

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Solution

The fourth proportional to 14,664.76, 20,238.99 and 8,377.13 is: 11,561.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,664.76 : 20,238.99 = 8,377.13 : x
  2. Step 2: Convert to fraction form
    14,664.76/20,238.99 = 8,377.13/x
  3. Step 3: Cross multiply
    14,664.76x = 20,238.99 × 8,377.13
  4. Step 4: Simplify right side
    14,664.76x = 169,544,650.30
  5. Step 5: Solve for x
    x = 169,544,650.30/14,664.76
  6. Step 6: Final answer
    x = 11,561.37

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Half scale
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Double scale
Find fourth proportional to 14,665.76, 20,240.37 and 8,378.13
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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.