Home / 12,235.75-16,885.40-7,200.18

Finding the Fourth Proportional to 12,235.75, 16,885.40 and 7,200.18

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Solution

The fourth proportional to 12,235.75, 16,885.40 and 7,200.18 is: 9,936.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,235.75 : 16,885.40 = 7,200.18 : x
  2. Step 2: Convert to fraction form
    12,235.75/16,885.40 = 7,200.18/x
  3. Step 3: Cross multiply
    12,235.75x = 16,885.40 × 7,200.18
  4. Step 4: Simplify right side
    12,235.75x = 121,577,883.37
  5. Step 5: Solve for x
    x = 121,577,883.37/12,235.75
  6. Step 6: Final answer
    x = 9,936.29

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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.