Home / 13,711.58-18,921.96-7,423.95

Finding the Fourth Proportional to 13,711.58, 18,921.96 and 7,423.95

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Solution

The fourth proportional to 13,711.58, 18,921.96 and 7,423.95 is: 10,245.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.58 : 18,921.96 = 7,423.95 : x
  2. Step 2: Convert to fraction form
    13,711.58/18,921.96 = 7,423.95/x
  3. Step 3: Cross multiply
    13,711.58x = 18,921.96 × 7,423.95
  4. Step 4: Simplify right side
    13,711.58x = 140,475,684.94
  5. Step 5: Solve for x
    x = 140,475,684.94/13,711.58
  6. Step 6: Final answer
    x = 10,245.04

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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.