Home / 14,501.64-20,012.04-8,128.80

Finding the Fourth Proportional to 14,501.64, 20,012.04 and 8,128.80

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Solution

The fourth proportional to 14,501.64, 20,012.04 and 8,128.80 is: 11,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,501.64 : 20,012.04 = 8,128.80 : x
  2. Step 2: Convert to fraction form
    14,501.64/20,012.04 = 8,128.80/x
  3. Step 3: Cross multiply
    14,501.64x = 20,012.04 × 8,128.80
  4. Step 4: Simplify right side
    14,501.64x = 162,673,870.75
  5. Step 5: Solve for x
    x = 162,673,870.75/14,501.64
  6. Step 6: Final answer
    x = 11,217.62

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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.