Home / 13,711.95-18,922.50-7,424.31

Finding the Fourth Proportional to 13,711.95, 18,922.50 and 7,424.31

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Solution

The fourth proportional to 13,711.95, 18,922.50 and 7,424.31 is: 10,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,711.95 : 18,922.50 = 7,424.31 : x
  2. Step 2: Convert to fraction form
    13,711.95/18,922.50 = 7,424.31/x
  3. Step 3: Cross multiply
    13,711.95x = 18,922.50 × 7,424.31
  4. Step 4: Simplify right side
    13,711.95x = 140,486,505.98
  5. Step 5: Solve for x
    x = 140,486,505.98/13,711.95
  6. Step 6: Final answer
    x = 10,245.55

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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.