Home / 28,129.50-38,850.60-19,161.45

Finding the Fourth Proportional to 28,129.50, 38,850.60 and 19,161.45

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Solution

The fourth proportional to 28,129.50, 38,850.60 and 19,161.45 is: 26,464.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,129.50 : 38,850.60 = 19,161.45 : x
  2. Step 2: Convert to fraction form
    28,129.50/38,850.60 = 19,161.45/x
  3. Step 3: Cross multiply
    28,129.50x = 38,850.60 × 19,161.45
  4. Step 4: Simplify right side
    28,129.50x = 744,433,829.37
  5. Step 5: Solve for x
    x = 744,433,829.37/28,129.50
  6. Step 6: Final answer
    x = 26,464.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.