Home / 28,648.05-39,533.71-15,900.48

Finding the Fourth Proportional to 28,648.05, 39,533.71 and 15,900.48

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Solution

The fourth proportional to 28,648.05, 39,533.71 and 15,900.48 is: 21,942.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.05 : 39,533.71 = 15,900.48 : x
  2. Step 2: Convert to fraction form
    28,648.05/39,533.71 = 15,900.48/x
  3. Step 3: Cross multiply
    28,648.05x = 39,533.71 × 15,900.48
  4. Step 4: Simplify right side
    28,648.05x = 628,604,965.18
  5. Step 5: Solve for x
    x = 628,604,965.18/28,648.05
  6. Step 6: Final answer
    x = 21,942.33

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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.