Home / 10,506.45-15,759.72-3,111.05

Finding the Fourth Proportional to 10,506.45, 15,759.72 and 3,111.05

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Solution

The fourth proportional to 10,506.45, 15,759.72 and 3,111.05 is: 4,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,506.45 : 15,759.72 = 3,111.05 : x
  2. Step 2: Convert to fraction form
    10,506.45/15,759.72 = 3,111.05/x
  3. Step 3: Cross multiply
    10,506.45x = 15,759.72 × 3,111.05
  4. Step 4: Simplify right side
    10,506.45x = 49,029,198.11
  5. Step 5: Solve for x
    x = 49,029,198.11/10,506.45
  6. Step 6: Final answer
    x = 4,666.58

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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.