Home / 12,140.06-18,207.06-8,619.80

Finding the Fourth Proportional to 12,140.06, 18,207.06 and 8,619.80

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Solution

The fourth proportional to 12,140.06, 18,207.06 and 8,619.80 is: 12,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.06 : 18,207.06 = 8,619.80 : x
  2. Step 2: Convert to fraction form
    12,140.06/18,207.06 = 8,619.80/x
  3. Step 3: Cross multiply
    12,140.06x = 18,207.06 × 8,619.80
  4. Step 4: Simplify right side
    12,140.06x = 156,941,215.79
  5. Step 5: Solve for x
    x = 156,941,215.79/12,140.06
  6. Step 6: Final answer
    x = 12,927.55

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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.