Home / 18,439.56-25,439.34-11,353.68

Finding the Fourth Proportional to 18,439.56, 25,439.34 and 11,353.68

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Solution

The fourth proportional to 18,439.56, 25,439.34 and 11,353.68 is: 15,663.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,439.56 : 25,439.34 = 11,353.68 : x
  2. Step 2: Convert to fraction form
    18,439.56/25,439.34 = 11,353.68/x
  3. Step 3: Cross multiply
    18,439.56x = 25,439.34 × 11,353.68
  4. Step 4: Simplify right side
    18,439.56x = 288,830,125.77
  5. Step 5: Solve for x
    x = 288,830,125.77/18,439.56
  6. Step 6: Final answer
    x = 15,663.61

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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.