Home / 20,561.14-28,369.46-14,185.70

Finding the Fourth Proportional to 20,561.14, 28,369.46 and 14,185.70

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Solution

The fourth proportional to 20,561.14, 28,369.46 and 14,185.70 is: 19,572.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.14 : 28,369.46 = 14,185.70 : x
  2. Step 2: Convert to fraction form
    20,561.14/28,369.46 = 14,185.70/x
  3. Step 3: Cross multiply
    20,561.14x = 28,369.46 × 14,185.70
  4. Step 4: Simplify right side
    20,561.14x = 402,440,648.72
  5. Step 5: Solve for x
    x = 402,440,648.72/20,561.14
  6. Step 6: Final answer
    x = 19,572.88

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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.