Home / 21,831.73-30,122.52-12,751.93

Finding the Fourth Proportional to 21,831.73, 30,122.52 and 12,751.93

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Solution

The fourth proportional to 21,831.73, 30,122.52 and 12,751.93 is: 17,594.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.73 : 30,122.52 = 12,751.93 : x
  2. Step 2: Convert to fraction form
    21,831.73/30,122.52 = 12,751.93/x
  3. Step 3: Cross multiply
    21,831.73x = 30,122.52 × 12,751.93
  4. Step 4: Simplify right side
    21,831.73x = 384,120,266.46
  5. Step 5: Solve for x
    x = 384,120,266.46/21,831.73
  6. Step 6: Final answer
    x = 17,594.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.