Home / 20,330.63-30,501.60-8,489.99

Finding the Fourth Proportional to 20,330.63, 30,501.60 and 8,489.99

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Solution

The fourth proportional to 20,330.63, 30,501.60 and 8,489.99 is: 12,737.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,330.63 : 30,501.60 = 8,489.99 : x
  2. Step 2: Convert to fraction form
    20,330.63/30,501.60 = 8,489.99/x
  3. Step 3: Cross multiply
    20,330.63x = 30,501.60 × 8,489.99
  4. Step 4: Simplify right side
    20,330.63x = 258,958,309.25
  5. Step 5: Solve for x
    x = 258,958,309.25/20,330.63
  6. Step 6: Final answer
    x = 12,737.35

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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.