Home / 21,335.05-29,437.65-12,377.36

Finding the Fourth Proportional to 21,335.05, 29,437.65 and 12,377.36

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Solution

The fourth proportional to 21,335.05, 29,437.65 and 12,377.36 is: 17,078.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.05 : 29,437.65 = 12,377.36 : x
  2. Step 2: Convert to fraction form
    21,335.05/29,437.65 = 12,377.36/x
  3. Step 3: Cross multiply
    21,335.05x = 29,437.65 × 12,377.36
  4. Step 4: Simplify right side
    21,335.05x = 364,360,391.60
  5. Step 5: Solve for x
    x = 364,360,391.60/21,335.05
  6. Step 6: Final answer
    x = 17,078.02

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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.