Home / 20,516.32-28,314.52-12,135.52

Finding the Fourth Proportional to 20,516.32, 28,314.52 and 12,135.52

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Solution

The fourth proportional to 20,516.32, 28,314.52 and 12,135.52 is: 16,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.32 : 28,314.52 = 12,135.52 : x
  2. Step 2: Convert to fraction form
    20,516.32/28,314.52 = 12,135.52/x
  3. Step 3: Cross multiply
    20,516.32x = 28,314.52 × 12,135.52
  4. Step 4: Simplify right side
    20,516.32x = 343,611,423.75
  5. Step 5: Solve for x
    x = 343,611,423.75/20,516.32
  6. Step 6: Final answer
    x = 16,748.20

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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.