Home / 12,728.76-19,089.90-8,566.44

Finding the Fourth Proportional to 12,728.76, 19,089.90 and 8,566.44

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Solution

The fourth proportional to 12,728.76, 19,089.90 and 8,566.44 is: 12,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.76 : 19,089.90 = 8,566.44 : x
  2. Step 2: Convert to fraction form
    12,728.76/19,089.90 = 8,566.44/x
  3. Step 3: Cross multiply
    12,728.76x = 19,089.90 × 8,566.44
  4. Step 4: Simplify right side
    12,728.76x = 163,532,482.96
  5. Step 5: Solve for x
    x = 163,532,482.96/12,728.76
  6. Step 6: Final answer
    x = 12,847.48

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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.