Home / 20,670.69-28,526.99-11,718.27

Finding the Fourth Proportional to 20,670.69, 28,526.99 and 11,718.27

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Solution

The fourth proportional to 20,670.69, 28,526.99 and 11,718.27 is: 16,172.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,670.69 : 28,526.99 = 11,718.27 : x
  2. Step 2: Convert to fraction form
    20,670.69/28,526.99 = 11,718.27/x
  3. Step 3: Cross multiply
    20,670.69x = 28,526.99 × 11,718.27
  4. Step 4: Simplify right side
    20,670.69x = 334,286,912.52
  5. Step 5: Solve for x
    x = 334,286,912.52/20,670.69
  6. Step 6: Final answer
    x = 16,172.02

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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.