Home / 19,231.10-28,815.60-10,886.30

Finding the Fourth Proportional to 19,231.10, 28,815.60 and 10,886.30

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Solution

The fourth proportional to 19,231.10, 28,815.60 and 10,886.30 is: 16,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.10 : 28,815.60 = 10,886.30 : x
  2. Step 2: Convert to fraction form
    19,231.10/28,815.60 = 10,886.30/x
  3. Step 3: Cross multiply
    19,231.10x = 28,815.60 × 10,886.30
  4. Step 4: Simplify right side
    19,231.10x = 313,695,266.28
  5. Step 5: Solve for x
    x = 313,695,266.28/19,231.10
  6. Step 6: Final answer
    x = 16,311.87

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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.