Home / 18,455.70-27,683.55-12,897.30

Finding the Fourth Proportional to 18,455.70, 27,683.55 and 12,897.30

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Solution

The fourth proportional to 18,455.70, 27,683.55 and 12,897.30 is: 19,345.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,455.70 : 27,683.55 = 12,897.30 : x
  2. Step 2: Convert to fraction form
    18,455.70/27,683.55 = 12,897.30/x
  3. Step 3: Cross multiply
    18,455.70x = 27,683.55 × 12,897.30
  4. Step 4: Simplify right side
    18,455.70x = 357,043,049.42
  5. Step 5: Solve for x
    x = 357,043,049.42/18,455.70
  6. Step 6: Final answer
    x = 19,345.95

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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.