Home / 21,652.72-29,880.76-12,223.28

Finding the Fourth Proportional to 21,652.72, 29,880.76 and 12,223.28

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Solution

The fourth proportional to 21,652.72, 29,880.76 and 12,223.28 is: 16,868.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,652.72 : 29,880.76 = 12,223.28 : x
  2. Step 2: Convert to fraction form
    21,652.72/29,880.76 = 12,223.28/x
  3. Step 3: Cross multiply
    21,652.72x = 29,880.76 × 12,223.28
  4. Step 4: Simplify right side
    21,652.72x = 365,240,896.09
  5. Step 5: Solve for x
    x = 365,240,896.09/21,652.72
  6. Step 6: Final answer
    x = 16,868.13

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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.