Home / 18,086.70-27,130.05-12,837.90

Finding the Fourth Proportional to 18,086.70, 27,130.05 and 12,837.90

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Solution

The fourth proportional to 18,086.70, 27,130.05 and 12,837.90 is: 19,256.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,086.70 : 27,130.05 = 12,837.90 : x
  2. Step 2: Convert to fraction form
    18,086.70/27,130.05 = 12,837.90/x
  3. Step 3: Cross multiply
    18,086.70x = 27,130.05 × 12,837.90
  4. Step 4: Simplify right side
    18,086.70x = 348,292,868.90
  5. Step 5: Solve for x
    x = 348,292,868.90/18,086.70
  6. Step 6: Final answer
    x = 19,256.85

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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.