Home / 20,962.26-28,928.16-11,530.98

Finding the Fourth Proportional to 20,962.26, 28,928.16 and 11,530.98

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Solution

The fourth proportional to 20,962.26, 28,928.16 and 11,530.98 is: 15,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.26 : 28,928.16 = 11,530.98 : x
  2. Step 2: Convert to fraction form
    20,962.26/28,928.16 = 11,530.98/x
  3. Step 3: Cross multiply
    20,962.26x = 28,928.16 × 11,530.98
  4. Step 4: Simplify right side
    20,962.26x = 333,570,034.40
  5. Step 5: Solve for x
    x = 333,570,034.40/20,962.26
  6. Step 6: Final answer
    x = 15,912.89

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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.