Home / 15,818.18-21,830.19-8,745.26

Finding the Fourth Proportional to 15,818.18, 21,830.19 and 8,745.26

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Solution

The fourth proportional to 15,818.18, 21,830.19 and 8,745.26 is: 12,069.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.18 : 21,830.19 = 8,745.26 : x
  2. Step 2: Convert to fraction form
    15,818.18/21,830.19 = 8,745.26/x
  3. Step 3: Cross multiply
    15,818.18x = 21,830.19 × 8,745.26
  4. Step 4: Simplify right side
    15,818.18x = 190,910,687.40
  5. Step 5: Solve for x
    x = 190,910,687.40/15,818.18
  6. Step 6: Final answer
    x = 12,069.07

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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.