Home / 12,011.79-18,056.43-11,138.34

Finding the Fourth Proportional to 12,011.79, 18,056.43 and 11,138.34

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Solution

The fourth proportional to 12,011.79, 18,056.43 and 11,138.34 is: 16,743.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.79 : 18,056.43 = 11,138.34 : x
  2. Step 2: Convert to fraction form
    12,011.79/18,056.43 = 11,138.34/x
  3. Step 3: Cross multiply
    12,011.79x = 18,056.43 × 11,138.34
  4. Step 4: Simplify right side
    12,011.79x = 201,118,656.53
  5. Step 5: Solve for x
    x = 201,118,656.53/12,011.79
  6. Step 6: Final answer
    x = 16,743.44

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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.