Home / 15,815.07-23,722.60-4,128.30

Finding the Fourth Proportional to 15,815.07, 23,722.60 and 4,128.30

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Solution

The fourth proportional to 15,815.07, 23,722.60 and 4,128.30 is: 6,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.07 : 23,722.60 = 4,128.30 : x
  2. Step 2: Convert to fraction form
    15,815.07/23,722.60 = 4,128.30/x
  3. Step 3: Cross multiply
    15,815.07x = 23,722.60 × 4,128.30
  4. Step 4: Simplify right side
    15,815.07x = 97,933,880.65
  5. Step 5: Solve for x
    x = 97,933,880.65/15,815.07
  6. Step 6: Final answer
    x = 6,192.44

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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.