Home / 18,137.61-25,031.70-12,181.68

Finding the Fourth Proportional to 18,137.61, 25,031.70 and 12,181.68

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Solution

The fourth proportional to 18,137.61, 25,031.70 and 12,181.68 is: 16,811.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.61 : 25,031.70 = 12,181.68 : x
  2. Step 2: Convert to fraction form
    18,137.61/25,031.70 = 12,181.68/x
  3. Step 3: Cross multiply
    18,137.61x = 25,031.70 × 12,181.68
  4. Step 4: Simplify right side
    18,137.61x = 304,928,159.26
  5. Step 5: Solve for x
    x = 304,928,159.26/18,137.61
  6. Step 6: Final answer
    x = 16,811.93

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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.