Home / 13,945.45-20,919.34-4,459.11

Finding the Fourth Proportional to 13,945.45, 20,919.34 and 4,459.11

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Solution

The fourth proportional to 13,945.45, 20,919.34 and 4,459.11 is: 6,689.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.45 : 20,919.34 = 4,459.11 : x
  2. Step 2: Convert to fraction form
    13,945.45/20,919.34 = 4,459.11/x
  3. Step 3: Cross multiply
    13,945.45x = 20,919.34 × 4,459.11
  4. Step 4: Simplify right side
    13,945.45x = 93,281,611.61
  5. Step 5: Solve for x
    x = 93,281,611.61/13,945.45
  6. Step 6: Final answer
    x = 6,689.04

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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.