Home / 19,639.87-27,102.90-10,687.34

Finding the Fourth Proportional to 19,639.87, 27,102.90 and 10,687.34

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Solution

The fourth proportional to 19,639.87, 27,102.90 and 10,687.34 is: 14,748.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.87 : 27,102.90 = 10,687.34 : x
  2. Step 2: Convert to fraction form
    19,639.87/27,102.90 = 10,687.34/x
  3. Step 3: Cross multiply
    19,639.87x = 27,102.90 × 10,687.34
  4. Step 4: Simplify right side
    19,639.87x = 289,658,015.12
  5. Step 5: Solve for x
    x = 289,658,015.12/19,639.87
  6. Step 6: Final answer
    x = 14,748.47

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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.