Home / 28,940.40-39,975.26-19,972.08

Finding the Fourth Proportional to 28,940.40, 39,975.26 and 19,972.08

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Solution

The fourth proportional to 28,940.40, 39,975.26 and 19,972.08 is: 27,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,940.40 : 39,975.26 = 19,972.08 : x
  2. Step 2: Convert to fraction form
    28,940.40/39,975.26 = 19,972.08/x
  3. Step 3: Cross multiply
    28,940.40x = 39,975.26 × 19,972.08
  4. Step 4: Simplify right side
    28,940.40x = 798,388,990.88
  5. Step 5: Solve for x
    x = 798,388,990.88/28,940.40
  6. Step 6: Final answer
    x = 27,587.35

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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.