Home / 39,731.94-54,831.60-21,828.60

Finding the Fourth Proportional to 39,731.94, 54,831.60 and 21,828.60

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Solution

The fourth proportional to 39,731.94, 54,831.60 and 21,828.60 is: 30,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,731.94 : 54,831.60 = 21,828.60 : x
  2. Step 2: Convert to fraction form
    39,731.94/54,831.60 = 21,828.60/x
  3. Step 3: Cross multiply
    39,731.94x = 54,831.60 × 21,828.60
  4. Step 4: Simplify right side
    39,731.94x = 1,196,897,063.76
  5. Step 5: Solve for x
    x = 1,196,897,063.76/39,731.94
  6. Step 6: Final answer
    x = 30,124.30

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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.