Home / 19,639.70-27,103.11-10,687.58

Finding the Fourth Proportional to 19,639.70, 27,103.11 and 10,687.58

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Solution

The fourth proportional to 19,639.70, 27,103.11 and 10,687.58 is: 14,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.70 : 27,103.11 = 10,687.58 : x
  2. Step 2: Convert to fraction form
    19,639.70/27,103.11 = 10,687.58/x
  3. Step 3: Cross multiply
    19,639.70x = 27,103.11 × 10,687.58
  4. Step 4: Simplify right side
    19,639.70x = 289,666,656.37
  5. Step 5: Solve for x
    x = 289,666,656.37/19,639.70
  6. Step 6: Final answer
    x = 14,749.04

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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.