Home / 19,639.90-27,103.64-10,687.98

Finding the Fourth Proportional to 19,639.90, 27,103.64 and 10,687.98

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Solution

The fourth proportional to 19,639.90, 27,103.64 and 10,687.98 is: 14,749.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.90 : 27,103.64 = 10,687.98 : x
  2. Step 2: Convert to fraction form
    19,639.90/27,103.64 = 10,687.98/x
  3. Step 3: Cross multiply
    19,639.90x = 27,103.64 × 10,687.98
  4. Step 4: Simplify right side
    19,639.90x = 289,683,237.17
  5. Step 5: Solve for x
    x = 289,683,237.17/19,639.90
  6. Step 6: Final answer
    x = 14,749.73

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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.