Home / 28,911.51-43,367.73-10,191.78

Finding the Fourth Proportional to 28,911.51, 43,367.73 and 10,191.78

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Solution

The fourth proportional to 28,911.51, 43,367.73 and 10,191.78 is: 15,287.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.51 : 43,367.73 = 10,191.78 : x
  2. Step 2: Convert to fraction form
    28,911.51/43,367.73 = 10,191.78/x
  3. Step 3: Cross multiply
    28,911.51x = 43,367.73 × 10,191.78
  4. Step 4: Simplify right side
    28,911.51x = 441,994,325.04
  5. Step 5: Solve for x
    x = 441,994,325.04/28,911.51
  6. Step 6: Final answer
    x = 15,287.83

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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.