Home / 18,439.42-25,456.39-11,270.99

Finding the Fourth Proportional to 18,439.42, 25,456.39 and 11,270.99

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Solution

The fourth proportional to 18,439.42, 25,456.39 and 11,270.99 is: 15,560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.42 : 25,456.39 = 11,270.99 : x
  2. Step 2: Convert to fraction form
    18,439.42/25,456.39 = 11,270.99/x
  3. Step 3: Cross multiply
    18,439.42x = 25,456.39 × 11,270.99
  4. Step 4: Simplify right side
    18,439.42x = 286,918,660.77
  5. Step 5: Solve for x
    x = 286,918,660.77/18,439.42
  6. Step 6: Final answer
    x = 15,560.07

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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.