Home / 21,392.34-29,519.55-11,959.08

Finding the Fourth Proportional to 21,392.34, 29,519.55 and 11,959.08

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Solution

The fourth proportional to 21,392.34, 29,519.55 and 11,959.08 is: 16,502.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.34 : 29,519.55 = 11,959.08 : x
  2. Step 2: Convert to fraction form
    21,392.34/29,519.55 = 11,959.08/x
  3. Step 3: Cross multiply
    21,392.34x = 29,519.55 × 11,959.08
  4. Step 4: Simplify right side
    21,392.34x = 353,026,660.01
  5. Step 5: Solve for x
    x = 353,026,660.01/21,392.34
  6. Step 6: Final answer
    x = 16,502.48

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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.