Home / 20,341.68-30,485.34-8,640.24

Finding the Fourth Proportional to 20,341.68, 30,485.34 and 8,640.24

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Solution

The fourth proportional to 20,341.68, 30,485.34 and 8,640.24 is: 12,948.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,341.68 : 30,485.34 = 8,640.24 : x
  2. Step 2: Convert to fraction form
    20,341.68/30,485.34 = 8,640.24/x
  3. Step 3: Cross multiply
    20,341.68x = 30,485.34 × 8,640.24
  4. Step 4: Simplify right side
    20,341.68x = 263,400,654.08
  5. Step 5: Solve for x
    x = 263,400,654.08/20,341.68
  6. Step 6: Final answer
    x = 12,948.82

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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.