Home / 20,485.95-30,718.62-9,949.35

Finding the Fourth Proportional to 20,485.95, 30,718.62 and 9,949.35

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Solution

The fourth proportional to 20,485.95, 30,718.62 and 9,949.35 is: 14,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.95 : 30,718.62 = 9,949.35 : x
  2. Step 2: Convert to fraction form
    20,485.95/30,718.62 = 9,949.35/x
  3. Step 3: Cross multiply
    20,485.95x = 30,718.62 × 9,949.35
  4. Step 4: Simplify right side
    20,485.95x = 305,630,301.90
  5. Step 5: Solve for x
    x = 305,630,301.90/20,485.95
  6. Step 6: Final answer
    x = 14,919.02

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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.