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Finding the Fourth Proportional to 28,775.88, 43,164.36 and 9,055.08

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Solution

The fourth proportional to 28,775.88, 43,164.36 and 9,055.08 is: 13,582.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775.88 : 43,164.36 = 9,055.08 : x
  2. Step 2: Convert to fraction form
    28,775.88/43,164.36 = 9,055.08/x
  3. Step 3: Cross multiply
    28,775.88x = 43,164.36 × 9,055.08
  4. Step 4: Simplify right side
    28,775.88x = 390,856,732.95
  5. Step 5: Solve for x
    x = 390,856,732.95/28,775.88
  6. Step 6: Final answer
    x = 13,582.79

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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.