Home / 20,927.19-28,879.73-11,495.76

Finding the Fourth Proportional to 20,927.19, 28,879.73 and 11,495.76

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Solution

The fourth proportional to 20,927.19, 28,879.73 and 11,495.76 is: 15,864.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.19 : 28,879.73 = 11,495.76 : x
  2. Step 2: Convert to fraction form
    20,927.19/28,879.73 = 11,495.76/x
  3. Step 3: Cross multiply
    20,927.19x = 28,879.73 × 11,495.76
  4. Step 4: Simplify right side
    20,927.19x = 331,994,444.94
  5. Step 5: Solve for x
    x = 331,994,444.94/20,927.19
  6. Step 6: Final answer
    x = 15,864.26

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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.