Home / 20,709.93-31,078.51-11,356.53

Finding the Fourth Proportional to 20,709.93, 31,078.51 and 11,356.53

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Solution

The fourth proportional to 20,709.93, 31,078.51 and 11,356.53 is: 17,042.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.93 : 31,078.51 = 11,356.53 : x
  2. Step 2: Convert to fraction form
    20,709.93/31,078.51 = 11,356.53/x
  3. Step 3: Cross multiply
    20,709.93x = 31,078.51 × 11,356.53
  4. Step 4: Simplify right side
    20,709.93x = 352,944,005.58
  5. Step 5: Solve for x
    x = 352,944,005.58/20,709.93
  6. Step 6: Final answer
    x = 17,042.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.