Home / 13,777.13-19,012.39-7,489.46

Finding the Fourth Proportional to 13,777.13, 19,012.39 and 7,489.46

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Solution

The fourth proportional to 13,777.13, 19,012.39 and 7,489.46 is: 10,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.13 : 19,012.39 = 7,489.46 : x
  2. Step 2: Convert to fraction form
    13,777.13/19,012.39 = 7,489.46/x
  3. Step 3: Cross multiply
    13,777.13x = 19,012.39 × 7,489.46
  4. Step 4: Simplify right side
    13,777.13x = 142,392,420.62
  5. Step 5: Solve for x
    x = 142,392,420.62/13,777.13
  6. Step 6: Final answer
    x = 10,335.42

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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.