Home / 21,188.10-29,241.74-11,756.72

Finding the Fourth Proportional to 21,188.10, 29,241.74 and 11,756.72

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Solution

The fourth proportional to 21,188.10, 29,241.74 and 11,756.72 is: 16,225.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.10 : 29,241.74 = 11,756.72 : x
  2. Step 2: Convert to fraction form
    21,188.10/29,241.74 = 11,756.72/x
  3. Step 3: Cross multiply
    21,188.10x = 29,241.74 × 11,756.72
  4. Step 4: Simplify right side
    21,188.10x = 343,786,949.49
  5. Step 5: Solve for x
    x = 343,786,949.49/21,188.10
  6. Step 6: Final answer
    x = 16,225.47

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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.