Home / 20,977.04-31,467.18-8,491.16

Finding the Fourth Proportional to 20,977.04, 31,467.18 and 8,491.16

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Solution

The fourth proportional to 20,977.04, 31,467.18 and 8,491.16 is: 12,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.04 : 31,467.18 = 8,491.16 : x
  2. Step 2: Convert to fraction form
    20,977.04/31,467.18 = 8,491.16/x
  3. Step 3: Cross multiply
    20,977.04x = 31,467.18 × 8,491.16
  4. Step 4: Simplify right side
    20,977.04x = 267,192,860.13
  5. Step 5: Solve for x
    x = 267,192,860.13/20,977.04
  6. Step 6: Final answer
    x = 12,737.40

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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.