Home / 19,138.95-28,706.56-5,812.06

Finding the Fourth Proportional to 19,138.95, 28,706.56 and 5,812.06

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Solution

The fourth proportional to 19,138.95, 28,706.56 and 5,812.06 is: 8,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.95 : 28,706.56 = 5,812.06 : x
  2. Step 2: Convert to fraction form
    19,138.95/28,706.56 = 5,812.06/x
  3. Step 3: Cross multiply
    19,138.95x = 28,706.56 × 5,812.06
  4. Step 4: Simplify right side
    19,138.95x = 166,844,191.88
  5. Step 5: Solve for x
    x = 166,844,191.88/19,138.95
  6. Step 6: Final answer
    x = 8,717.52

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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.