Home / 10,721.58-16,085.61-4,145.46

Finding the Fourth Proportional to 10,721.58, 16,085.61 and 4,145.46

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Solution

The fourth proportional to 10,721.58, 16,085.61 and 4,145.46 is: 6,219.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,721.58 : 16,085.61 = 4,145.46 : x
  2. Step 2: Convert to fraction form
    10,721.58/16,085.61 = 4,145.46/x
  3. Step 3: Cross multiply
    10,721.58x = 16,085.61 × 4,145.46
  4. Step 4: Simplify right side
    10,721.58x = 66,682,252.83
  5. Step 5: Solve for x
    x = 66,682,252.83/10,721.58
  6. Step 6: Final answer
    x = 6,219.44

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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.