Home / 19,319.97-28,975.27-5,280.06

Finding the Fourth Proportional to 19,319.97, 28,975.27 and 5,280.06

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Solution

The fourth proportional to 19,319.97, 28,975.27 and 5,280.06 is: 7,918.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.97 : 28,975.27 = 5,280.06 : x
  2. Step 2: Convert to fraction form
    19,319.97/28,975.27 = 5,280.06/x
  3. Step 3: Cross multiply
    19,319.97x = 28,975.27 × 5,280.06
  4. Step 4: Simplify right side
    19,319.97x = 152,991,164.12
  5. Step 5: Solve for x
    x = 152,991,164.12/19,319.97
  6. Step 6: Final answer
    x = 7,918.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.