Home / 13,655.18-18,846.64-7,989.60

Finding the Fourth Proportional to 13,655.18, 18,846.64 and 7,989.60

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Solution

The fourth proportional to 13,655.18, 18,846.64 and 7,989.60 is: 11,027.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.18 : 18,846.64 = 7,989.60 : x
  2. Step 2: Convert to fraction form
    13,655.18/18,846.64 = 7,989.60/x
  3. Step 3: Cross multiply
    13,655.18x = 18,846.64 × 7,989.60
  4. Step 4: Simplify right side
    13,655.18x = 150,577,114.94
  5. Step 5: Solve for x
    x = 150,577,114.94/13,655.18
  6. Step 6: Final answer
    x = 11,027.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.