Home / 20,738.51-31,111.85-6,702.09

Finding the Fourth Proportional to 20,738.51, 31,111.85 and 6,702.09

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Solution

The fourth proportional to 20,738.51, 31,111.85 and 6,702.09 is: 10,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.51 : 31,111.85 = 6,702.09 : x
  2. Step 2: Convert to fraction form
    20,738.51/31,111.85 = 6,702.09/x
  3. Step 3: Cross multiply
    20,738.51x = 31,111.85 × 6,702.09
  4. Step 4: Simplify right side
    20,738.51x = 208,514,418.77
  5. Step 5: Solve for x
    x = 208,514,418.77/20,738.51
  6. Step 6: Final answer
    x = 10,054.46

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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.