Home / 13,521.06-20,267.22-7,977

Finding the Fourth Proportional to 13,521.06, 20,267.22 and 7,977

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Solution

The fourth proportional to 13,521.06, 20,267.22 and 7,977 is: 11,957.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.06 : 20,267.22 = 7,977 : x
  2. Step 2: Convert to fraction form
    13,521.06/20,267.22 = 7,977/x
  3. Step 3: Cross multiply
    13,521.06x = 20,267.22 × 7,977
  4. Step 4: Simplify right side
    13,521.06x = 161,671,613.94
  5. Step 5: Solve for x
    x = 161,671,613.94/13,521.06
  6. Step 6: Final answer
    x = 11,957.02

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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.