Home / 12,803.64-19,193.63-8,109.45

Finding the Fourth Proportional to 12,803.64, 19,193.63 and 8,109.45

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Solution

The fourth proportional to 12,803.64, 19,193.63 and 8,109.45 is: 12,156.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.64 : 19,193.63 = 8,109.45 : x
  2. Step 2: Convert to fraction form
    12,803.64/19,193.63 = 8,109.45/x
  3. Step 3: Cross multiply
    12,803.64x = 19,193.63 × 8,109.45
  4. Step 4: Simplify right side
    12,803.64x = 155,649,742.26
  5. Step 5: Solve for x
    x = 155,649,742.26/12,803.64
  6. Step 6: Final answer
    x = 12,156.68

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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.