Home / 20,927.54-28,879.53-11,495.90

Finding the Fourth Proportional to 20,927.54, 28,879.53 and 11,495.90

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Solution

The fourth proportional to 20,927.54, 28,879.53 and 11,495.90 is: 15,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.54 : 28,879.53 = 11,495.90 : x
  2. Step 2: Convert to fraction form
    20,927.54/28,879.53 = 11,495.90/x
  3. Step 3: Cross multiply
    20,927.54x = 28,879.53 × 11,495.90
  4. Step 4: Simplify right side
    20,927.54x = 331,996,188.93
  5. Step 5: Solve for x
    x = 331,996,188.93/20,927.54
  6. Step 6: Final answer
    x = 15,864.08

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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.