Home / 19,112.46-28,662.93-7,422.90

Finding the Fourth Proportional to 19,112.46, 28,662.93 and 7,422.90

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Solution

The fourth proportional to 19,112.46, 28,662.93 and 7,422.90 is: 11,132.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.46 : 28,662.93 = 7,422.90 : x
  2. Step 2: Convert to fraction form
    19,112.46/28,662.93 = 7,422.90/x
  3. Step 3: Cross multiply
    19,112.46x = 28,662.93 × 7,422.90
  4. Step 4: Simplify right side
    19,112.46x = 212,762,063.10
  5. Step 5: Solve for x
    x = 212,762,063.10/19,112.46
  6. Step 6: Final answer
    x = 11,132.11

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1.5x scale

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.