Home / 13,743.91-18,966.60-7,775.46

Finding the Fourth Proportional to 13,743.91, 18,966.60 and 7,775.46

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Solution

The fourth proportional to 13,743.91, 18,966.60 and 7,775.46 is: 10,730.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.91 : 18,966.60 = 7,775.46 : x
  2. Step 2: Convert to fraction form
    13,743.91/18,966.60 = 7,775.46/x
  3. Step 3: Cross multiply
    13,743.91x = 18,966.60 × 7,775.46
  4. Step 4: Simplify right side
    13,743.91x = 147,474,039.64
  5. Step 5: Solve for x
    x = 147,474,039.64/13,743.91
  6. Step 6: Final answer
    x = 10,730.14

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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.