Home / 20,962.48-28,928.36-11,530.80

Finding the Fourth Proportional to 20,962.48, 28,928.36 and 11,530.80

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Solution

The fourth proportional to 20,962.48, 28,928.36 and 11,530.80 is: 15,912.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.48 : 28,928.36 = 11,530.80 : x
  2. Step 2: Convert to fraction form
    20,962.48/28,928.36 = 11,530.80/x
  3. Step 3: Cross multiply
    20,962.48x = 28,928.36 × 11,530.80
  4. Step 4: Simplify right side
    20,962.48x = 333,567,133.49
  5. Step 5: Solve for x
    x = 333,567,133.49/20,962.48
  6. Step 6: Final answer
    x = 15,912.58

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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.