Home / 15,853.35-21,879.95-9,137.66

Finding the Fourth Proportional to 15,853.35, 21,879.95 and 9,137.66

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Solution

The fourth proportional to 15,853.35, 21,879.95 and 9,137.66 is: 12,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,853.35 : 21,879.95 = 9,137.66 : x
  2. Step 2: Convert to fraction form
    15,853.35/21,879.95 = 9,137.66/x
  3. Step 3: Cross multiply
    15,853.35x = 21,879.95 × 9,137.66
  4. Step 4: Simplify right side
    15,853.35x = 199,931,537.60
  5. Step 5: Solve for x
    x = 199,931,537.60/15,853.35
  6. Step 6: Final answer
    x = 12,611.32

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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.