Home / 13,709.38-20,522.13-8,783.77

Finding the Fourth Proportional to 13,709.38, 20,522.13 and 8,783.77

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Solution

The fourth proportional to 13,709.38, 20,522.13 and 8,783.77 is: 13,148.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,709.38 : 20,522.13 = 8,783.77 : x
  2. Step 2: Convert to fraction form
    13,709.38/20,522.13 = 8,783.77/x
  3. Step 3: Cross multiply
    13,709.38x = 20,522.13 × 8,783.77
  4. Step 4: Simplify right side
    13,709.38x = 180,261,669.83
  5. Step 5: Solve for x
    x = 180,261,669.83/13,709.38
  6. Step 6: Final answer
    x = 13,148.78

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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.