Home / 28,975.72-39,987.06-18,910.60

Finding the Fourth Proportional to 28,975.72, 39,987.06 and 18,910.60

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Solution

The fourth proportional to 28,975.72, 39,987.06 and 18,910.60 is: 26,097.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,975.72 : 39,987.06 = 18,910.60 : x
  2. Step 2: Convert to fraction form
    28,975.72/39,987.06 = 18,910.60/x
  3. Step 3: Cross multiply
    28,975.72x = 39,987.06 × 18,910.60
  4. Step 4: Simplify right side
    28,975.72x = 756,179,296.84
  5. Step 5: Solve for x
    x = 756,179,296.84/28,975.72
  6. Step 6: Final answer
    x = 26,097.00

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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.