Home / 20,460.08-30,695.46-6,420.55

Finding the Fourth Proportional to 20,460.08, 30,695.46 and 6,420.55

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Solution

The fourth proportional to 20,460.08, 30,695.46 and 6,420.55 is: 9,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.08 : 30,695.46 = 6,420.55 : x
  2. Step 2: Convert to fraction form
    20,460.08/30,695.46 = 6,420.55/x
  3. Step 3: Cross multiply
    20,460.08x = 30,695.46 × 6,420.55
  4. Step 4: Simplify right side
    20,460.08x = 197,081,735.70
  5. Step 5: Solve for x
    x = 197,081,735.70/20,460.08
  6. Step 6: Final answer
    x = 9,632.50

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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.