Home / 18,142.90-27,188.39-10,335.58

Finding the Fourth Proportional to 18,142.90, 27,188.39 and 10,335.58

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Solution

The fourth proportional to 18,142.90, 27,188.39 and 10,335.58 is: 15,488.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142.90 : 27,188.39 = 10,335.58 : x
  2. Step 2: Convert to fraction form
    18,142.90/27,188.39 = 10,335.58/x
  3. Step 3: Cross multiply
    18,142.90x = 27,188.39 × 10,335.58
  4. Step 4: Simplify right side
    18,142.90x = 281,007,779.92
  5. Step 5: Solve for x
    x = 281,007,779.92/18,142.90
  6. Step 6: Final answer
    x = 15,488.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.