Home / 20,422.52-30,639.93-7,273.18

Finding the Fourth Proportional to 20,422.52, 30,639.93 and 7,273.18

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Solution

The fourth proportional to 20,422.52, 30,639.93 and 7,273.18 is: 10,911.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.52 : 30,639.93 = 7,273.18 : x
  2. Step 2: Convert to fraction form
    20,422.52/30,639.93 = 7,273.18/x
  3. Step 3: Cross multiply
    20,422.52x = 30,639.93 × 7,273.18
  4. Step 4: Simplify right side
    20,422.52x = 222,849,536.51
  5. Step 5: Solve for x
    x = 222,849,536.51/20,422.52
  6. Step 6: Final answer
    x = 10,911.95

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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.