Home / 19,639.61-27,103.23-10,687.69

Finding the Fourth Proportional to 19,639.61, 27,103.23 and 10,687.69

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Solution

The fourth proportional to 19,639.61, 27,103.23 and 10,687.69 is: 14,749.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.61 : 27,103.23 = 10,687.69 : x
  2. Step 2: Convert to fraction form
    19,639.61/27,103.23 = 10,687.69/x
  3. Step 3: Cross multiply
    19,639.61x = 27,103.23 × 10,687.69
  4. Step 4: Simplify right side
    19,639.61x = 289,670,852.48
  5. Step 5: Solve for x
    x = 289,670,852.48/19,639.61
  6. Step 6: Final answer
    x = 14,749.32

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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.