Home / 21,281.76-29,360.84-12,326.00

Finding the Fourth Proportional to 21,281.76, 29,360.84 and 12,326.00

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Solution

The fourth proportional to 21,281.76, 29,360.84 and 12,326.00 is: 17,005.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.76 : 29,360.84 = 12,326.00 : x
  2. Step 2: Convert to fraction form
    21,281.76/29,360.84 = 12,326.00/x
  3. Step 3: Cross multiply
    21,281.76x = 29,360.84 × 12,326.00
  4. Step 4: Simplify right side
    21,281.76x = 361,901,505.41
  5. Step 5: Solve for x
    x = 361,901,505.41/21,281.76
  6. Step 6: Final answer
    x = 17,005.24

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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.