Home / 28,338.75-39,107.48-15,763.50

Finding the Fourth Proportional to 28,338.75, 39,107.48 and 15,763.50

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Solution

The fourth proportional to 28,338.75, 39,107.48 and 15,763.50 is: 21,753.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.75 : 39,107.48 = 15,763.50 : x
  2. Step 2: Convert to fraction form
    28,338.75/39,107.48 = 15,763.50/x
  3. Step 3: Cross multiply
    28,338.75x = 39,107.48 × 15,763.50
  4. Step 4: Simplify right side
    28,338.75x = 616,470,682.16
  5. Step 5: Solve for x
    x = 616,470,682.16/28,338.75
  6. Step 6: Final answer
    x = 21,753.63

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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.