Home / 28,383.09-39,169.37-15,808.05

Finding the Fourth Proportional to 28,383.09, 39,169.37 and 15,808.05

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Solution

The fourth proportional to 28,383.09, 39,169.37 and 15,808.05 is: 21,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.09 : 39,169.37 = 15,808.05 : x
  2. Step 2: Convert to fraction form
    28,383.09/39,169.37 = 15,808.05/x
  3. Step 3: Cross multiply
    28,383.09x = 39,169.37 × 15,808.05
  4. Step 4: Simplify right side
    28,383.09x = 619,191,280.39
  5. Step 5: Solve for x
    x = 619,191,280.39/28,383.09
  6. Step 6: Final answer
    x = 21,815.50

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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.