Home / 18,311.44-27,438.75-12,700.07

Finding the Fourth Proportional to 18,311.44, 27,438.75 and 12,700.07

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Solution

The fourth proportional to 18,311.44, 27,438.75 and 12,700.07 is: 19,030.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.44 : 27,438.75 = 12,700.07 : x
  2. Step 2: Convert to fraction form
    18,311.44/27,438.75 = 12,700.07/x
  3. Step 3: Cross multiply
    18,311.44x = 27,438.75 × 12,700.07
  4. Step 4: Simplify right side
    18,311.44x = 348,473,934.24
  5. Step 5: Solve for x
    x = 348,473,934.24/18,311.44
  6. Step 6: Final answer
    x = 19,030.39

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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.