Home / 28,917.44-39,905.74-15,669.44

Finding the Fourth Proportional to 28,917.44, 39,905.74 and 15,669.44

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Solution

The fourth proportional to 28,917.44, 39,905.74 and 15,669.44 is: 21,623.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.44 : 39,905.74 = 15,669.44 : x
  2. Step 2: Convert to fraction form
    28,917.44/39,905.74 = 15,669.44/x
  3. Step 3: Cross multiply
    28,917.44x = 39,905.74 × 15,669.44
  4. Step 4: Simplify right side
    28,917.44x = 625,300,598.59
  5. Step 5: Solve for x
    x = 625,300,598.59/28,917.44
  6. Step 6: Final answer
    x = 21,623.65

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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.