Home / 20,102.15-30,156.20-6,950.99

Finding the Fourth Proportional to 20,102.15, 30,156.20 and 6,950.99

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Solution

The fourth proportional to 20,102.15, 30,156.20 and 6,950.99 is: 10,427.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102.15 : 30,156.20 = 6,950.99 : x
  2. Step 2: Convert to fraction form
    20,102.15/30,156.20 = 6,950.99/x
  3. Step 3: Cross multiply
    20,102.15x = 30,156.20 × 6,950.99
  4. Step 4: Simplify right side
    20,102.15x = 209,615,444.64
  5. Step 5: Solve for x
    x = 209,615,444.64/20,102.15
  6. Step 6: Final answer
    x = 10,427.51

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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.