Home / 13,378.77-20,070.41-4,945.77

Finding the Fourth Proportional to 13,378.77, 20,070.41 and 4,945.77

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Solution

The fourth proportional to 13,378.77, 20,070.41 and 4,945.77 is: 7,419.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,378.77 : 20,070.41 = 4,945.77 : x
  2. Step 2: Convert to fraction form
    13,378.77/20,070.41 = 4,945.77/x
  3. Step 3: Cross multiply
    13,378.77x = 20,070.41 × 4,945.77
  4. Step 4: Simplify right side
    13,378.77x = 99,263,606.94
  5. Step 5: Solve for x
    x = 99,263,606.94/13,378.77
  6. Step 6: Final answer
    x = 7,419.49

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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.