Home / 14,500.55-20,012.16-8,128.23

Finding the Fourth Proportional to 14,500.55, 20,012.16 and 8,128.23

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Solution

The fourth proportional to 14,500.55, 20,012.16 and 8,128.23 is: 11,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,500.55 : 20,012.16 = 8,128.23 : x
  2. Step 2: Convert to fraction form
    14,500.55/20,012.16 = 8,128.23/x
  3. Step 3: Cross multiply
    14,500.55x = 20,012.16 × 8,128.23
  4. Step 4: Simplify right side
    14,500.55x = 162,663,439.28
  5. Step 5: Solve for x
    x = 162,663,439.28/14,500.55
  6. Step 6: Final answer
    x = 11,217.74

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Double scale
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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.