Home / 21,161.16-29,182.25-12,661.94

Finding the Fourth Proportional to 21,161.16, 29,182.25 and 12,661.94

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Solution

The fourth proportional to 21,161.16, 29,182.25 and 12,661.94 is: 17,461.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.16 : 29,182.25 = 12,661.94 : x
  2. Step 2: Convert to fraction form
    21,161.16/29,182.25 = 12,661.94/x
  3. Step 3: Cross multiply
    21,161.16x = 29,182.25 × 12,661.94
  4. Step 4: Simplify right side
    21,161.16x = 369,503,898.57
  5. Step 5: Solve for x
    x = 369,503,898.57/21,161.16
  6. Step 6: Final answer
    x = 17,461.42

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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.