Home / 13,743.58-18,966.16-7,775.12

Finding the Fourth Proportional to 13,743.58, 18,966.16 and 7,775.12

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Solution

The fourth proportional to 13,743.58, 18,966.16 and 7,775.12 is: 10,729.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.58 : 18,966.16 = 7,775.12 : x
  2. Step 2: Convert to fraction form
    13,743.58/18,966.16 = 7,775.12/x
  3. Step 3: Cross multiply
    13,743.58x = 18,966.16 × 7,775.12
  4. Step 4: Simplify right side
    13,743.58x = 147,464,169.94
  5. Step 5: Solve for x
    x = 147,464,169.94/13,743.58
  6. Step 6: Final answer
    x = 10,729.68

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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.