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Finding the Fourth Proportional to 28,888.64, 43,328.54 and 9,164.63

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Solution

The fourth proportional to 28,888.64, 43,328.54 and 9,164.63 is: 13,745.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,888.64 : 43,328.54 = 9,164.63 : x
  2. Step 2: Convert to fraction form
    28,888.64/43,328.54 = 9,164.63/x
  3. Step 3: Cross multiply
    28,888.64x = 43,328.54 × 9,164.63
  4. Step 4: Simplify right side
    28,888.64x = 397,089,775.07
  5. Step 5: Solve for x
    x = 397,089,775.07/28,888.64
  6. Step 6: Final answer
    x = 13,745.54

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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.