Home / 19,981.89-27,576.62-11,485.40

Finding the Fourth Proportional to 19,981.89, 27,576.62 and 11,485.40

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Solution

The fourth proportional to 19,981.89, 27,576.62 and 11,485.40 is: 15,850.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.89 : 27,576.62 = 11,485.40 : x
  2. Step 2: Convert to fraction form
    19,981.89/27,576.62 = 11,485.40/x
  3. Step 3: Cross multiply
    19,981.89x = 27,576.62 × 11,485.40
  4. Step 4: Simplify right side
    19,981.89x = 316,728,359.11
  5. Step 5: Solve for x
    x = 316,728,359.11/19,981.89
  6. Step 6: Final answer
    x = 15,850.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.