Home / 20,961.56-28,927.02-11,530.72

Finding the Fourth Proportional to 20,961.56, 28,927.02 and 11,530.72

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Solution

The fourth proportional to 20,961.56, 28,927.02 and 11,530.72 is: 15,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.56 : 28,927.02 = 11,530.72 : x
  2. Step 2: Convert to fraction form
    20,961.56/28,927.02 = 11,530.72/x
  3. Step 3: Cross multiply
    20,961.56x = 28,927.02 × 11,530.72
  4. Step 4: Simplify right side
    20,961.56x = 333,549,368.05
  5. Step 5: Solve for x
    x = 333,549,368.05/20,961.56
  6. Step 6: Final answer
    x = 15,912.43

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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.