Home / 13,517.94-20,278.86-4,158.76

Finding the Fourth Proportional to 13,517.94, 20,278.86 and 4,158.76

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Solution

The fourth proportional to 13,517.94, 20,278.86 and 4,158.76 is: 6,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.94 : 20,278.86 = 4,158.76 : x
  2. Step 2: Convert to fraction form
    13,517.94/20,278.86 = 4,158.76/x
  3. Step 3: Cross multiply
    13,517.94x = 20,278.86 × 4,158.76
  4. Step 4: Simplify right side
    13,517.94x = 84,334,911.81
  5. Step 5: Solve for x
    x = 84,334,911.81/13,517.94
  6. Step 6: Final answer
    x = 6,238.74

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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.