Home / 20,563.20-30,831.30-8,075.70

Finding the Fourth Proportional to 20,563.20, 30,831.30 and 8,075.70

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Solution

The fourth proportional to 20,563.20, 30,831.30 and 8,075.70 is: 12,108.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.20 : 30,831.30 = 8,075.70 : x
  2. Step 2: Convert to fraction form
    20,563.20/30,831.30 = 8,075.70/x
  3. Step 3: Cross multiply
    20,563.20x = 30,831.30 × 8,075.70
  4. Step 4: Simplify right side
    20,563.20x = 248,984,329.41
  5. Step 5: Solve for x
    x = 248,984,329.41/20,563.20
  6. Step 6: Final answer
    x = 12,108.25

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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.