Home / 18,216.72-27,331.72-7,689.36

Finding the Fourth Proportional to 18,216.72, 27,331.72 and 7,689.36

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Solution

The fourth proportional to 18,216.72, 27,331.72 and 7,689.36 is: 11,536.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.72 : 27,331.72 = 7,689.36 : x
  2. Step 2: Convert to fraction form
    18,216.72/27,331.72 = 7,689.36/x
  3. Step 3: Cross multiply
    18,216.72x = 27,331.72 × 7,689.36
  4. Step 4: Simplify right side
    18,216.72x = 210,163,434.50
  5. Step 5: Solve for x
    x = 210,163,434.50/18,216.72
  6. Step 6: Final answer
    x = 11,536.84

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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.