Home / 12,655.24-18,989.58-8,485

Finding the Fourth Proportional to 12,655.24, 18,989.58 and 8,485

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Solution

The fourth proportional to 12,655.24, 18,989.58 and 8,485 is: 12,732.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.24 : 18,989.58 = 8,485 : x
  2. Step 2: Convert to fraction form
    12,655.24/18,989.58 = 8,485/x
  3. Step 3: Cross multiply
    12,655.24x = 18,989.58 × 8,485
  4. Step 4: Simplify right side
    12,655.24x = 161,126,586.30
  5. Step 5: Solve for x
    x = 161,126,586.30/12,655.24
  6. Step 6: Final answer
    x = 12,732.01

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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.