Home / 28,383.06-39,169.84-15,807.81

Finding the Fourth Proportional to 28,383.06, 39,169.84 and 15,807.81

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Solution

The fourth proportional to 28,383.06, 39,169.84 and 15,807.81 is: 21,815.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.06 : 39,169.84 = 15,807.81 : x
  2. Step 2: Convert to fraction form
    28,383.06/39,169.84 = 15,807.81/x
  3. Step 3: Cross multiply
    28,383.06x = 39,169.84 × 15,807.81
  4. Step 4: Simplify right side
    28,383.06x = 619,189,388.45
  5. Step 5: Solve for x
    x = 619,189,388.45/28,383.06
  6. Step 6: Final answer
    x = 21,815.46

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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.