Home / 21,387.62-29,533.82-13,335.02

Finding the Fourth Proportional to 21,387.62, 29,533.82 and 13,335.02

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Solution

The fourth proportional to 21,387.62, 29,533.82 and 13,335.02 is: 18,414.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.62 : 29,533.82 = 13,335.02 : x
  2. Step 2: Convert to fraction form
    21,387.62/29,533.82 = 13,335.02/x
  3. Step 3: Cross multiply
    21,387.62x = 29,533.82 × 13,335.02
  4. Step 4: Simplify right side
    21,387.62x = 393,833,866.03
  5. Step 5: Solve for x
    x = 393,833,866.03/21,387.62
  6. Step 6: Final answer
    x = 18,414.11

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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.