Home / 13,872.40-20,796.90-6,472.96

Finding the Fourth Proportional to 13,872.40, 20,796.90 and 6,472.96

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Solution

The fourth proportional to 13,872.40, 20,796.90 and 6,472.96 is: 9,703.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.40 : 20,796.90 = 6,472.96 : x
  2. Step 2: Convert to fraction form
    13,872.40/20,796.90 = 6,472.96/x
  3. Step 3: Cross multiply
    13,872.40x = 20,796.90 × 6,472.96
  4. Step 4: Simplify right side
    13,872.40x = 134,617,501.82
  5. Step 5: Solve for x
    x = 134,617,501.82/13,872.40
  6. Step 6: Final answer
    x = 9,703.98

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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.