Home / 12,159.88-18,240.84-4,763.80

Finding the Fourth Proportional to 12,159.88, 18,240.84 and 4,763.80

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Solution

The fourth proportional to 12,159.88, 18,240.84 and 4,763.80 is: 7,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,159.88 : 18,240.84 = 4,763.80 : x
  2. Step 2: Convert to fraction form
    12,159.88/18,240.84 = 4,763.80/x
  3. Step 3: Cross multiply
    12,159.88x = 18,240.84 × 4,763.80
  4. Step 4: Simplify right side
    12,159.88x = 86,895,713.59
  5. Step 5: Solve for x
    x = 86,895,713.59/12,159.88
  6. Step 6: Final answer
    x = 7,146.10

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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.