Home / 19,640.62-27,103.94-10,688.09

Finding the Fourth Proportional to 19,640.62, 27,103.94 and 10,688.09

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Solution

The fourth proportional to 19,640.62, 27,103.94 and 10,688.09 is: 14,749.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.62 : 27,103.94 = 10,688.09 : x
  2. Step 2: Convert to fraction form
    19,640.62/27,103.94 = 10,688.09/x
  3. Step 3: Cross multiply
    19,640.62x = 27,103.94 × 10,688.09
  4. Step 4: Simplify right side
    19,640.62x = 289,689,364.39
  5. Step 5: Solve for x
    x = 289,689,364.39/19,640.62
  6. Step 6: Final answer
    x = 14,749.50

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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.