Home / 20,527.32-28,321.26-12,561.24

Finding the Fourth Proportional to 20,527.32, 28,321.26 and 12,561.24

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Solution

The fourth proportional to 20,527.32, 28,321.26 and 12,561.24 is: 17,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,527.32 : 28,321.26 = 12,561.24 : x
  2. Step 2: Convert to fraction form
    20,527.32/28,321.26 = 12,561.24/x
  3. Step 3: Cross multiply
    20,527.32x = 28,321.26 × 12,561.24
  4. Step 4: Simplify right side
    20,527.32x = 355,750,143.96
  5. Step 5: Solve for x
    x = 355,750,143.96/20,527.32
  6. Step 6: Final answer
    x = 17,330.57

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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.