Home / 20,503.35-30,762.63-8,660.16

Finding the Fourth Proportional to 20,503.35, 30,762.63 and 8,660.16

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Solution

The fourth proportional to 20,503.35, 30,762.63 and 8,660.16 is: 12,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.35 : 30,762.63 = 8,660.16 : x
  2. Step 2: Convert to fraction form
    20,503.35/30,762.63 = 8,660.16/x
  3. Step 3: Cross multiply
    20,503.35x = 30,762.63 × 8,660.16
  4. Step 4: Simplify right side
    20,503.35x = 266,409,297.82
  5. Step 5: Solve for x
    x = 266,409,297.82/20,503.35
  6. Step 6: Final answer
    x = 12,993.45

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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.