Home / 21,281.31-29,364.80-11,848.05

Finding the Fourth Proportional to 21,281.31, 29,364.80 and 11,848.05

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Solution

The fourth proportional to 21,281.31, 29,364.80 and 11,848.05 is: 16,348.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.31 : 29,364.80 = 11,848.05 : x
  2. Step 2: Convert to fraction form
    21,281.31/29,364.80 = 11,848.05/x
  3. Step 3: Cross multiply
    21,281.31x = 29,364.80 × 11,848.05
  4. Step 4: Simplify right side
    21,281.31x = 347,915,559.40
  5. Step 5: Solve for x
    x = 347,915,559.40/21,281.31
  6. Step 6: Final answer
    x = 16,348.41

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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.