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Finding the Fourth Proportional to 14,245.66, 19,658.93 and 7,872.69

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Solution

The fourth proportional to 14,245.66, 19,658.93 and 7,872.69 is: 10,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,245.66 : 19,658.93 = 7,872.69 : x
  2. Step 2: Convert to fraction form
    14,245.66/19,658.93 = 7,872.69/x
  3. Step 3: Cross multiply
    14,245.66x = 19,658.93 × 7,872.69
  4. Step 4: Simplify right side
    14,245.66x = 154,768,585.40
  5. Step 5: Solve for x
    x = 154,768,585.40/14,245.66
  6. Step 6: Final answer
    x = 10,864.27

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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.