Home / 21,400.88-29,534.52-11,970.08

Finding the Fourth Proportional to 21,400.88, 29,534.52 and 11,970.08

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Solution

The fourth proportional to 21,400.88, 29,534.52 and 11,970.08 is: 16,519.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,400.88 : 29,534.52 = 11,970.08 : x
  2. Step 2: Convert to fraction form
    21,400.88/29,534.52 = 11,970.08/x
  3. Step 3: Cross multiply
    21,400.88x = 29,534.52 × 11,970.08
  4. Step 4: Simplify right side
    21,400.88x = 353,530,567.16
  5. Step 5: Solve for x
    x = 353,530,567.16/21,400.88
  6. Step 6: Final answer
    x = 16,519.44

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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.