Home / 19,150.90-28,724.04-5,111.98

Finding the Fourth Proportional to 19,150.90, 28,724.04 and 5,111.98

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Solution

The fourth proportional to 19,150.90, 28,724.04 and 5,111.98 is: 7,667.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150.90 : 28,724.04 = 5,111.98 : x
  2. Step 2: Convert to fraction form
    19,150.90/28,724.04 = 5,111.98/x
  3. Step 3: Cross multiply
    19,150.90x = 28,724.04 × 5,111.98
  4. Step 4: Simplify right side
    19,150.90x = 146,836,718.00
  5. Step 5: Solve for x
    x = 146,836,718.00/19,150.90
  6. Step 6: Final answer
    x = 7,667.35

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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.