Home / 12,558.12-18,840.75-10,240.05

Finding the Fourth Proportional to 12,558.12, 18,840.75 and 10,240.05

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Solution

The fourth proportional to 12,558.12, 18,840.75 and 10,240.05 is: 15,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.12 : 18,840.75 = 10,240.05 : x
  2. Step 2: Convert to fraction form
    12,558.12/18,840.75 = 10,240.05/x
  3. Step 3: Cross multiply
    12,558.12x = 18,840.75 × 10,240.05
  4. Step 4: Simplify right side
    12,558.12x = 192,930,170.84
  5. Step 5: Solve for x
    x = 192,930,170.84/12,558.12
  6. Step 6: Final answer
    x = 15,362.98

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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.