Home / 13,724.80-18,940.24-7,437.12

Finding the Fourth Proportional to 13,724.80, 18,940.24 and 7,437.12

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Solution

The fourth proportional to 13,724.80, 18,940.24 and 7,437.12 is: 10,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.80 : 18,940.24 = 7,437.12 : x
  2. Step 2: Convert to fraction form
    13,724.80/18,940.24 = 7,437.12/x
  3. Step 3: Cross multiply
    13,724.80x = 18,940.24 × 7,437.12
  4. Step 4: Simplify right side
    13,724.80x = 140,860,837.71
  5. Step 5: Solve for x
    x = 140,860,837.71/13,724.80
  6. Step 6: Final answer
    x = 10,263.23

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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.