Home / 21,297.48-29,391.12-12,223.62

Finding the Fourth Proportional to 21,297.48, 29,391.12 and 12,223.62

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Solution

The fourth proportional to 21,297.48, 29,391.12 and 12,223.62 is: 16,868.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,297.48 : 29,391.12 = 12,223.62 : x
  2. Step 2: Convert to fraction form
    21,297.48/29,391.12 = 12,223.62/x
  3. Step 3: Cross multiply
    21,297.48x = 29,391.12 × 12,223.62
  4. Step 4: Simplify right side
    21,297.48x = 359,265,872.02
  5. Step 5: Solve for x
    x = 359,265,872.02/21,297.48
  6. Step 6: Final answer
    x = 16,868.94

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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.