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Finding the Fourth Proportional to 30,965.56, 46,448.25 and 8,779.12

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Solution

The fourth proportional to 30,965.56, 46,448.25 and 8,779.12 is: 13,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.56 : 46,448.25 = 8,779.12 : x
  2. Step 2: Convert to fraction form
    30,965.56/46,448.25 = 8,779.12/x
  3. Step 3: Cross multiply
    30,965.56x = 46,448.25 × 8,779.12
  4. Step 4: Simplify right side
    30,965.56x = 407,774,716.64
  5. Step 5: Solve for x
    x = 407,774,716.64/30,965.56
  6. Step 6: Final answer
    x = 13,168.66

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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.