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Finding the Fourth Proportional to 30,245.13, 45,369.48 and 9,185.87

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Solution

The fourth proportional to 30,245.13, 45,369.48 and 9,185.87 is: 13,779.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,245.13 : 45,369.48 = 9,185.87 : x
  2. Step 2: Convert to fraction form
    30,245.13/45,369.48 = 9,185.87/x
  3. Step 3: Cross multiply
    30,245.13x = 45,369.48 × 9,185.87
  4. Step 4: Simplify right side
    30,245.13x = 416,758,293.12
  5. Step 5: Solve for x
    x = 416,758,293.12/30,245.13
  6. Step 6: Final answer
    x = 13,779.35

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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.