Home / 21,176.09-29,222.56-13,107.60

Finding the Fourth Proportional to 21,176.09, 29,222.56 and 13,107.60

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Solution

The fourth proportional to 21,176.09, 29,222.56 and 13,107.60 is: 18,088.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.09 : 29,222.56 = 13,107.60 : x
  2. Step 2: Convert to fraction form
    21,176.09/29,222.56 = 13,107.60/x
  3. Step 3: Cross multiply
    21,176.09x = 29,222.56 × 13,107.60
  4. Step 4: Simplify right side
    21,176.09x = 383,037,753.43
  5. Step 5: Solve for x
    x = 383,037,753.43/21,176.09
  6. Step 6: Final answer
    x = 18,088.22

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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.