Home / 20,316.24-30,487.34-8,629.45

Finding the Fourth Proportional to 20,316.24, 30,487.34 and 8,629.45

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Solution

The fourth proportional to 20,316.24, 30,487.34 and 8,629.45 is: 12,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.24 : 30,487.34 = 8,629.45 : x
  2. Step 2: Convert to fraction form
    20,316.24/30,487.34 = 8,629.45/x
  3. Step 3: Cross multiply
    20,316.24x = 30,487.34 × 8,629.45
  4. Step 4: Simplify right side
    20,316.24x = 263,088,921.52
  5. Step 5: Solve for x
    x = 263,088,921.52/20,316.24
  6. Step 6: Final answer
    x = 12,949.69

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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.