Home / 19,639.97-27,103.72-10,688.05

Finding the Fourth Proportional to 19,639.97, 27,103.72 and 10,688.05

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Solution

The fourth proportional to 19,639.97, 27,103.72 and 10,688.05 is: 14,749.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.97 : 27,103.72 = 10,688.05 : x
  2. Step 2: Convert to fraction form
    19,639.97/27,103.72 = 10,688.05/x
  3. Step 3: Cross multiply
    19,639.97x = 27,103.72 × 10,688.05
  4. Step 4: Simplify right side
    19,639.97x = 289,685,852.99
  5. Step 5: Solve for x
    x = 289,685,852.99/19,639.97
  6. Step 6: Final answer
    x = 14,749.81

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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.