Home / 13,869.61-20,776.89-6,463.87

Finding the Fourth Proportional to 13,869.61, 20,776.89 and 6,463.87

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Solution

The fourth proportional to 13,869.61, 20,776.89 and 6,463.87 is: 9,682.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.61 : 20,776.89 = 6,463.87 : x
  2. Step 2: Convert to fraction form
    13,869.61/20,776.89 = 6,463.87/x
  3. Step 3: Cross multiply
    13,869.61x = 20,776.89 × 6,463.87
  4. Step 4: Simplify right side
    13,869.61x = 134,299,115.96
  5. Step 5: Solve for x
    x = 134,299,115.96/13,869.61
  6. Step 6: Final answer
    x = 9,682.98

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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.