Home / 20,122.50-30,185.42-6,271.50

Finding the Fourth Proportional to 20,122.50, 30,185.42 and 6,271.50

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Solution

The fourth proportional to 20,122.50, 30,185.42 and 6,271.50 is: 9,407.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,122.50 : 30,185.42 = 6,271.50 : x
  2. Step 2: Convert to fraction form
    20,122.50/30,185.42 = 6,271.50/x
  3. Step 3: Cross multiply
    20,122.50x = 30,185.42 × 6,271.50
  4. Step 4: Simplify right side
    20,122.50x = 189,307,830.17
  5. Step 5: Solve for x
    x = 189,307,830.17/20,122.50
  6. Step 6: Final answer
    x = 9,407.77

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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.