Home / 21,401.35-29,533.86-11,969.92

Finding the Fourth Proportional to 21,401.35, 29,533.86 and 11,969.92

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Solution

The fourth proportional to 21,401.35, 29,533.86 and 11,969.92 is: 16,518.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.35 : 29,533.86 = 11,969.92 : x
  2. Step 2: Convert to fraction form
    21,401.35/29,533.86 = 11,969.92/x
  3. Step 3: Cross multiply
    21,401.35x = 29,533.86 × 11,969.92
  4. Step 4: Simplify right side
    21,401.35x = 353,517,941.49
  5. Step 5: Solve for x
    x = 353,517,941.49/21,401.35
  6. Step 6: Final answer
    x = 16,518.49

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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.