Home / 20,973.98-31,439.10-8,502.62

Finding the Fourth Proportional to 20,973.98, 31,439.10 and 8,502.62

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Solution

The fourth proportional to 20,973.98, 31,439.10 and 8,502.62 is: 12,745.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.98 : 31,439.10 = 8,502.62 : x
  2. Step 2: Convert to fraction form
    20,973.98/31,439.10 = 8,502.62/x
  3. Step 3: Cross multiply
    20,973.98x = 31,439.10 × 8,502.62
  4. Step 4: Simplify right side
    20,973.98x = 267,314,595.13
  5. Step 5: Solve for x
    x = 267,314,595.13/20,973.98
  6. Step 6: Final answer
    x = 12,745.06

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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.