Home / 19,271.40-28,917.90-8,176.20

Finding the Fourth Proportional to 19,271.40, 28,917.90 and 8,176.20

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Solution

The fourth proportional to 19,271.40, 28,917.90 and 8,176.20 is: 12,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.40 : 28,917.90 = 8,176.20 : x
  2. Step 2: Convert to fraction form
    19,271.40/28,917.90 = 8,176.20/x
  3. Step 3: Cross multiply
    19,271.40x = 28,917.90 × 8,176.20
  4. Step 4: Simplify right side
    19,271.40x = 236,438,533.98
  5. Step 5: Solve for x
    x = 236,438,533.98/19,271.40
  6. Step 6: Final answer
    x = 12,268.88

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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.