Home / 28,820.73-39,771.63-15,900.52

Finding the Fourth Proportional to 28,820.73, 39,771.63 and 15,900.52

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Solution

The fourth proportional to 28,820.73, 39,771.63 and 15,900.52 is: 21,942.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.73 : 39,771.63 = 15,900.52 : x
  2. Step 2: Convert to fraction form
    28,820.73/39,771.63 = 15,900.52/x
  3. Step 3: Cross multiply
    28,820.73x = 39,771.63 × 15,900.52
  4. Step 4: Simplify right side
    28,820.73x = 632,389,518.75
  5. Step 5: Solve for x
    x = 632,389,518.75/28,820.73
  6. Step 6: Final answer
    x = 21,942.18

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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.