Home / 10,128.80-15,195.28-4,285.44

Finding the Fourth Proportional to 10,128.80, 15,195.28 and 4,285.44

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Solution

The fourth proportional to 10,128.80, 15,195.28 and 4,285.44 is: 6,429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.80 : 15,195.28 = 4,285.44 : x
  2. Step 2: Convert to fraction form
    10,128.80/15,195.28 = 4,285.44/x
  3. Step 3: Cross multiply
    10,128.80x = 15,195.28 × 4,285.44
  4. Step 4: Simplify right side
    10,128.80x = 65,118,460.72
  5. Step 5: Solve for x
    x = 65,118,460.72/10,128.80
  6. Step 6: Final answer
    x = 6,429.04

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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.