Home / 21,326.76-29,430.36-12,251.88

Finding the Fourth Proportional to 21,326.76, 29,430.36 and 12,251.88

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Solution

The fourth proportional to 21,326.76, 29,430.36 and 12,251.88 is: 16,907.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.76 : 29,430.36 = 12,251.88 : x
  2. Step 2: Convert to fraction form
    21,326.76/29,430.36 = 12,251.88/x
  3. Step 3: Cross multiply
    21,326.76x = 29,430.36 × 12,251.88
  4. Step 4: Simplify right side
    21,326.76x = 360,577,239.08
  5. Step 5: Solve for x
    x = 360,577,239.08/21,326.76
  6. Step 6: Final answer
    x = 16,907.27

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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.