Home / 20,069.12-30,113.76-12,672.32

Finding the Fourth Proportional to 20,069.12, 30,113.76 and 12,672.32

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Solution

The fourth proportional to 20,069.12, 30,113.76 and 12,672.32 is: 19,014.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.12 : 30,113.76 = 12,672.32 : x
  2. Step 2: Convert to fraction form
    20,069.12/30,113.76 = 12,672.32/x
  3. Step 3: Cross multiply
    20,069.12x = 30,113.76 × 12,672.32
  4. Step 4: Simplify right side
    20,069.12x = 381,611,203.12
  5. Step 5: Solve for x
    x = 381,611,203.12/20,069.12
  6. Step 6: Final answer
    x = 19,014.84

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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.