Home / 21,401.72-29,533.92-11,970.32

Finding the Fourth Proportional to 21,401.72, 29,533.92 and 11,970.32

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Solution

The fourth proportional to 21,401.72, 29,533.92 and 11,970.32 is: 16,518.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,401.72 : 29,533.92 = 11,970.32 : x
  2. Step 2: Convert to fraction form
    21,401.72/29,533.92 = 11,970.32/x
  3. Step 3: Cross multiply
    21,401.72x = 29,533.92 × 11,970.32
  4. Step 4: Simplify right side
    21,401.72x = 353,530,473.25
  5. Step 5: Solve for x
    x = 353,530,473.25/21,401.72
  6. Step 6: Final answer
    x = 16,518.79

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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.