Home / 13,728.56-20,541.76-8,184.96

Finding the Fourth Proportional to 13,728.56, 20,541.76 and 8,184.96

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Solution

The fourth proportional to 13,728.56, 20,541.76 and 8,184.96 is: 12,246.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.56 : 20,541.76 = 8,184.96 : x
  2. Step 2: Convert to fraction form
    13,728.56/20,541.76 = 8,184.96/x
  3. Step 3: Cross multiply
    13,728.56x = 20,541.76 × 8,184.96
  4. Step 4: Simplify right side
    13,728.56x = 168,133,483.93
  5. Step 5: Solve for x
    x = 168,133,483.93/13,728.56
  6. Step 6: Final answer
    x = 12,246.99

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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.