Home / 14,416.34-19,894.55-8,128.71

Finding the Fourth Proportional to 14,416.34, 19,894.55 and 8,128.71

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Solution

The fourth proportional to 14,416.34, 19,894.55 and 8,128.71 is: 11,217.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,416.34 : 19,894.55 = 8,128.71 : x
  2. Step 2: Convert to fraction form
    14,416.34/19,894.55 = 8,128.71/x
  3. Step 3: Cross multiply
    14,416.34x = 19,894.55 × 8,128.71
  4. Step 4: Simplify right side
    14,416.34x = 161,716,986.89
  5. Step 5: Solve for x
    x = 161,716,986.89/14,416.34
  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.