Home / 20,586.42-28,409.19-11,154.96

Finding the Fourth Proportional to 20,586.42, 28,409.19 and 11,154.96

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Solution

The fourth proportional to 20,586.42, 28,409.19 and 11,154.96 is: 15,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.42 : 28,409.19 = 11,154.96 : x
  2. Step 2: Convert to fraction form
    20,586.42/28,409.19 = 11,154.96/x
  3. Step 3: Cross multiply
    20,586.42x = 28,409.19 × 11,154.96
  4. Step 4: Simplify right side
    20,586.42x = 316,903,378.08
  5. Step 5: Solve for x
    x = 316,903,378.08/20,586.42
  6. Step 6: Final answer
    x = 15,393.81

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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.