Home / 19,640.85-27,103.99-10,688.51

Finding the Fourth Proportional to 19,640.85, 27,103.99 and 10,688.51

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Solution

The fourth proportional to 19,640.85, 27,103.99 and 10,688.51 is: 14,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.85 : 27,103.99 = 10,688.51 : x
  2. Step 2: Convert to fraction form
    19,640.85/27,103.99 = 10,688.51/x
  3. Step 3: Cross multiply
    19,640.85x = 27,103.99 × 10,688.51
  4. Step 4: Simplify right side
    19,640.85x = 289,701,206.84
  5. Step 5: Solve for x
    x = 289,701,206.84/19,640.85
  6. Step 6: Final answer
    x = 14,749.93

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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.