Home / 13,440.39-18,546.93-7,471.85

Finding the Fourth Proportional to 13,440.39, 18,546.93 and 7,471.85

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Solution

The fourth proportional to 13,440.39, 18,546.93 and 7,471.85 is: 10,310.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.39 : 18,546.93 = 7,471.85 : x
  2. Step 2: Convert to fraction form
    13,440.39/18,546.93 = 7,471.85/x
  3. Step 3: Cross multiply
    13,440.39x = 18,546.93 × 7,471.85
  4. Step 4: Simplify right side
    13,440.39x = 138,579,878.92
  5. Step 5: Solve for x
    x = 138,579,878.92/13,440.39
  6. Step 6: Final answer
    x = 10,310.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.