Home / 20,571.84-30,857.77-4,989.46

Finding the Fourth Proportional to 20,571.84, 30,857.77 and 4,989.46

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Solution

The fourth proportional to 20,571.84, 30,857.77 and 4,989.46 is: 7,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.84 : 30,857.77 = 4,989.46 : x
  2. Step 2: Convert to fraction form
    20,571.84/30,857.77 = 4,989.46/x
  3. Step 3: Cross multiply
    20,571.84x = 30,857.77 × 4,989.46
  4. Step 4: Simplify right side
    20,571.84x = 153,963,584.16
  5. Step 5: Solve for x
    x = 153,963,584.16/20,571.84
  6. Step 6: Final answer
    x = 7,484.19

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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.