Home / 12,372.12-18,533.44-7,439.05

Finding the Fourth Proportional to 12,372.12, 18,533.44 and 7,439.05

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Solution

The fourth proportional to 12,372.12, 18,533.44 and 7,439.05 is: 11,143.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,372.12 : 18,533.44 = 7,439.05 : x
  2. Step 2: Convert to fraction form
    12,372.12/18,533.44 = 7,439.05/x
  3. Step 3: Cross multiply
    12,372.12x = 18,533.44 × 7,439.05
  4. Step 4: Simplify right side
    12,372.12x = 137,871,186.83
  5. Step 5: Solve for x
    x = 137,871,186.83/12,372.12
  6. Step 6: Final answer
    x = 11,143.70

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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.