Home / 21,187.10-29,240.70-11,756.27

Finding the Fourth Proportional to 21,187.10, 29,240.70 and 11,756.27

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Solution

The fourth proportional to 21,187.10, 29,240.70 and 11,756.27 is: 16,225.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.10 : 29,240.70 = 11,756.27 : x
  2. Step 2: Convert to fraction form
    21,187.10/29,240.70 = 11,756.27/x
  3. Step 3: Cross multiply
    21,187.10x = 29,240.70 × 11,756.27
  4. Step 4: Simplify right side
    21,187.10x = 343,761,593.20
  5. Step 5: Solve for x
    x = 343,761,593.20/21,187.10
  6. Step 6: Final answer
    x = 16,225.04

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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.