Home / 20,156.58-30,235.01-6,999.75

Finding the Fourth Proportional to 20,156.58, 30,235.01 and 6,999.75

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Solution

The fourth proportional to 20,156.58, 30,235.01 and 6,999.75 is: 10,499.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.58 : 30,235.01 = 6,999.75 : x
  2. Step 2: Convert to fraction form
    20,156.58/30,235.01 = 6,999.75/x
  3. Step 3: Cross multiply
    20,156.58x = 30,235.01 × 6,999.75
  4. Step 4: Simplify right side
    20,156.58x = 211,637,476.25
  5. Step 5: Solve for x
    x = 211,637,476.25/20,156.58
  6. Step 6: Final answer
    x = 10,499.67

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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.