Home / 20,962.06-28,928.20-11,530.88

Finding the Fourth Proportional to 20,962.06, 28,928.20 and 11,530.88

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Solution

The fourth proportional to 20,962.06, 28,928.20 and 11,530.88 is: 15,912.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,962.06 : 28,928.20 = 11,530.88 : x
  2. Step 2: Convert to fraction form
    20,962.06/28,928.20 = 11,530.88/x
  3. Step 3: Cross multiply
    20,962.06x = 28,928.20 × 11,530.88
  4. Step 4: Simplify right side
    20,962.06x = 333,567,602.82
  5. Step 5: Solve for x
    x = 333,567,602.82/20,962.06
  6. Step 6: Final answer
    x = 15,912.92

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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.