Home / 20,312.28-30,450.12-7,162.32

Finding the Fourth Proportional to 20,312.28, 30,450.12 and 7,162.32

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Solution

The fourth proportional to 20,312.28, 30,450.12 and 7,162.32 is: 10,737.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.28 : 30,450.12 = 7,162.32 : x
  2. Step 2: Convert to fraction form
    20,312.28/30,450.12 = 7,162.32/x
  3. Step 3: Cross multiply
    20,312.28x = 30,450.12 × 7,162.32
  4. Step 4: Simplify right side
    20,312.28x = 218,093,503.48
  5. Step 5: Solve for x
    x = 218,093,503.48/20,312.28
  6. Step 6: Final answer
    x = 10,737.03

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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.