Home / 21,085.67-29,099.11-12,133.21

Finding the Fourth Proportional to 21,085.67, 29,099.11 and 12,133.21

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Solution

The fourth proportional to 21,085.67, 29,099.11 and 12,133.21 is: 16,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,085.67 : 29,099.11 = 12,133.21 : x
  2. Step 2: Convert to fraction form
    21,085.67/29,099.11 = 12,133.21/x
  3. Step 3: Cross multiply
    21,085.67x = 29,099.11 × 12,133.21
  4. Step 4: Simplify right side
    21,085.67x = 353,065,509.36
  5. Step 5: Solve for x
    x = 353,065,509.36/21,085.67
  6. Step 6: Final answer
    x = 16,744.33

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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.