Home / 13,725.12-18,940.68-7,437.45

Finding the Fourth Proportional to 13,725.12, 18,940.68 and 7,437.45

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Solution

The fourth proportional to 13,725.12, 18,940.68 and 7,437.45 is: 10,263.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.12 : 18,940.68 = 7,437.45 : x
  2. Step 2: Convert to fraction form
    13,725.12/18,940.68 = 7,437.45/x
  3. Step 3: Cross multiply
    13,725.12x = 18,940.68 × 7,437.45
  4. Step 4: Simplify right side
    13,725.12x = 140,870,360.47
  5. Step 5: Solve for x
    x = 140,870,360.47/13,725.12
  6. Step 6: Final answer
    x = 10,263.69

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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.