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Finding the Fourth Proportional to 14,779.88, 20,396.07 and 8,065.56

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Solution

The fourth proportional to 14,779.88, 20,396.07 and 8,065.56 is: 11,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.88 : 20,396.07 = 8,065.56 : x
  2. Step 2: Convert to fraction form
    14,779.88/20,396.07 = 8,065.56/x
  3. Step 3: Cross multiply
    14,779.88x = 20,396.07 × 8,065.56
  4. Step 4: Simplify right side
    14,779.88x = 164,505,726.35
  5. Step 5: Solve for x
    x = 164,505,726.35/14,779.88
  6. Step 6: Final answer
    x = 11,130.38

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