Home / 21,707.75-29,950.09-12,146.65

Finding the Fourth Proportional to 21,707.75, 29,950.09 and 12,146.65

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Solution

The fourth proportional to 21,707.75, 29,950.09 and 12,146.65 is: 16,758.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,707.75 : 29,950.09 = 12,146.65 : x
  2. Step 2: Convert to fraction form
    21,707.75/29,950.09 = 12,146.65/x
  3. Step 3: Cross multiply
    21,707.75x = 29,950.09 × 12,146.65
  4. Step 4: Simplify right side
    21,707.75x = 363,793,155.46
  5. Step 5: Solve for x
    x = 363,793,155.46/21,707.75
  6. Step 6: Final answer
    x = 16,758.67

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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.