Home / 12,138.30-18,207.45-11,044.80

Finding the Fourth Proportional to 12,138.30, 18,207.45 and 11,044.80

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Solution

The fourth proportional to 12,138.30, 18,207.45 and 11,044.80 is: 16,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.30 : 18,207.45 = 11,044.80 : x
  2. Step 2: Convert to fraction form
    12,138.30/18,207.45 = 11,044.80/x
  3. Step 3: Cross multiply
    12,138.30x = 18,207.45 × 11,044.80
  4. Step 4: Simplify right side
    12,138.30x = 201,097,643.76
  5. Step 5: Solve for x
    x = 201,097,643.76/12,138.30
  6. Step 6: Final answer
    x = 16,567.20

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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.