Home / 12,383.90-18,549.58-9,738.84

Finding the Fourth Proportional to 12,383.90, 18,549.58 and 9,738.84

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Solution

The fourth proportional to 12,383.90, 18,549.58 and 9,738.84 is: 14,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.90 : 18,549.58 = 9,738.84 : x
  2. Step 2: Convert to fraction form
    12,383.90/18,549.58 = 9,738.84/x
  3. Step 3: Cross multiply
    12,383.90x = 18,549.58 × 9,738.84
  4. Step 4: Simplify right side
    12,383.90x = 180,651,391.69
  5. Step 5: Solve for x
    x = 180,651,391.69/12,383.90
  6. Step 6: Final answer
    x = 14,587.60

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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.