Home / 21,529.57-32,275.21-8,378.86

Finding the Fourth Proportional to 21,529.57, 32,275.21 and 8,378.86

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Solution

The fourth proportional to 21,529.57, 32,275.21 and 8,378.86 is: 12,560.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,529.57 : 32,275.21 = 8,378.86 : x
  2. Step 2: Convert to fraction form
    21,529.57/32,275.21 = 8,378.86/x
  3. Step 3: Cross multiply
    21,529.57x = 32,275.21 × 8,378.86
  4. Step 4: Simplify right side
    21,529.57x = 270,429,466.06
  5. Step 5: Solve for x
    x = 270,429,466.06/21,529.57
  6. Step 6: Final answer
    x = 12,560.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.