Home / 20,648.10-30,950.49-10,103.58

Finding the Fourth Proportional to 20,648.10, 30,950.49 and 10,103.58

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Solution

The fourth proportional to 20,648.10, 30,950.49 and 10,103.58 is: 15,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.10 : 30,950.49 = 10,103.58 : x
  2. Step 2: Convert to fraction form
    20,648.10/30,950.49 = 10,103.58/x
  3. Step 3: Cross multiply
    20,648.10x = 30,950.49 × 10,103.58
  4. Step 4: Simplify right side
    20,648.10x = 312,710,751.75
  5. Step 5: Solve for x
    x = 312,710,751.75/20,648.10
  6. Step 6: Final answer
    x = 15,144.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.