Home / 13,931.87-20,892.60-5,609.07

Finding the Fourth Proportional to 13,931.87, 20,892.60 and 5,609.07

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Solution

The fourth proportional to 13,931.87, 20,892.60 and 5,609.07 is: 8,411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.87 : 20,892.60 = 5,609.07 : x
  2. Step 2: Convert to fraction form
    13,931.87/20,892.60 = 5,609.07/x
  3. Step 3: Cross multiply
    13,931.87x = 20,892.60 × 5,609.07
  4. Step 4: Simplify right side
    13,931.87x = 117,188,055.88
  5. Step 5: Solve for x
    x = 117,188,055.88/13,931.87
  6. Step 6: Final answer
    x = 8,411.51

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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.