Home / 18,212.18-27,328.89-7,681.55

Finding the Fourth Proportional to 18,212.18, 27,328.89 and 7,681.55

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Solution

The fourth proportional to 18,212.18, 27,328.89 and 7,681.55 is: 11,526.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.18 : 27,328.89 = 7,681.55 : x
  2. Step 2: Convert to fraction form
    18,212.18/27,328.89 = 7,681.55/x
  3. Step 3: Cross multiply
    18,212.18x = 27,328.89 × 7,681.55
  4. Step 4: Simplify right side
    18,212.18x = 209,928,234.98
  5. Step 5: Solve for x
    x = 209,928,234.98/18,212.18
  6. Step 6: Final answer
    x = 11,526.80

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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.