Home / 19,639.53-27,102.11-10,687.06

Finding the Fourth Proportional to 19,639.53, 27,102.11 and 10,687.06

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Solution

The fourth proportional to 19,639.53, 27,102.11 and 10,687.06 is: 14,747.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,639.53 : 27,102.11 = 10,687.06 : x
  2. Step 2: Convert to fraction form
    19,639.53/27,102.11 = 10,687.06/x
  3. Step 3: Cross multiply
    19,639.53x = 27,102.11 × 10,687.06
  4. Step 4: Simplify right side
    19,639.53x = 289,641,740.19
  5. Step 5: Solve for x
    x = 289,641,740.19/19,639.53
  6. Step 6: Final answer
    x = 14,747.90

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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.