Home / 20,333.36-28,058.74-11,379.35

Finding the Fourth Proportional to 20,333.36, 28,058.74 and 11,379.35

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Solution

The fourth proportional to 20,333.36, 28,058.74 and 11,379.35 is: 15,702.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,333.36 : 28,058.74 = 11,379.35 : x
  2. Step 2: Convert to fraction form
    20,333.36/28,058.74 = 11,379.35/x
  3. Step 3: Cross multiply
    20,333.36x = 28,058.74 × 11,379.35
  4. Step 4: Simplify right side
    20,333.36x = 319,290,264.72
  5. Step 5: Solve for x
    x = 319,290,264.72/20,333.36
  6. Step 6: Final answer
    x = 15,702.78

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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.