Home / 18,212.18-27,328.90-7,681.56

Finding the Fourth Proportional to 18,212.18, 27,328.90 and 7,681.56

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Solution

The fourth proportional to 18,212.18, 27,328.90 and 7,681.56 is: 11,526.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.18 : 27,328.90 = 7,681.56 : x
  2. Step 2: Convert to fraction form
    18,212.18/27,328.90 = 7,681.56/x
  3. Step 3: Cross multiply
    18,212.18x = 27,328.90 × 7,681.56
  4. Step 4: Simplify right side
    18,212.18x = 209,928,585.08
  5. Step 5: Solve for x
    x = 209,928,585.08/18,212.18
  6. Step 6: Final answer
    x = 11,526.82

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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.