Home / 20,121.68-27,762.99-12,056.65

Finding the Fourth Proportional to 20,121.68, 27,762.99 and 12,056.65

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Solution

The fourth proportional to 20,121.68, 27,762.99 and 12,056.65 is: 16,635.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.68 : 27,762.99 = 12,056.65 : x
  2. Step 2: Convert to fraction form
    20,121.68/27,762.99 = 12,056.65/x
  3. Step 3: Cross multiply
    20,121.68x = 27,762.99 × 12,056.65
  4. Step 4: Simplify right side
    20,121.68x = 334,728,538.76
  5. Step 5: Solve for x
    x = 334,728,538.76/20,121.68
  6. Step 6: Final answer
    x = 16,635.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.