Home / 15,515.50-23,223.30-8,109.40

Finding the Fourth Proportional to 15,515.50, 23,223.30 and 8,109.40

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Solution

The fourth proportional to 15,515.50, 23,223.30 and 8,109.40 is: 12,137.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.50 : 23,223.30 = 8,109.40 : x
  2. Step 2: Convert to fraction form
    15,515.50/23,223.30 = 8,109.40/x
  3. Step 3: Cross multiply
    15,515.50x = 23,223.30 × 8,109.40
  4. Step 4: Simplify right side
    15,515.50x = 188,327,029.02
  5. Step 5: Solve for x
    x = 188,327,029.02/15,515.50
  6. Step 6: Final answer
    x = 12,137.99

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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.