Home / 18,638.49-27,920.82-12,069.30

Finding the Fourth Proportional to 18,638.49, 27,920.82 and 12,069.30

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Solution

The fourth proportional to 18,638.49, 27,920.82 and 12,069.30 is: 18,080.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,638.49 : 27,920.82 = 12,069.30 : x
  2. Step 2: Convert to fraction form
    18,638.49/27,920.82 = 12,069.30/x
  3. Step 3: Cross multiply
    18,638.49x = 27,920.82 × 12,069.30
  4. Step 4: Simplify right side
    18,638.49x = 336,984,752.83
  5. Step 5: Solve for x
    x = 336,984,752.83/18,638.49
  6. Step 6: Final answer
    x = 18,080.05

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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.