Home / 13,200.16-18,199.44-9,427.84

Finding the Fourth Proportional to 13,200.16, 18,199.44 and 9,427.84

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Solution

The fourth proportional to 13,200.16, 18,199.44 and 9,427.84 is: 12,998.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.16 : 18,199.44 = 9,427.84 : x
  2. Step 2: Convert to fraction form
    13,200.16/18,199.44 = 9,427.84/x
  3. Step 3: Cross multiply
    13,200.16x = 18,199.44 × 9,427.84
  4. Step 4: Simplify right side
    13,200.16x = 171,581,408.41
  5. Step 5: Solve for x
    x = 171,581,408.41/13,200.16
  6. Step 6: Final answer
    x = 12,998.43

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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.