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Finding the Fourth Proportional to 14,247.64, 19,661.73 and 7,874.71

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Solution

The fourth proportional to 14,247.64, 19,661.73 and 7,874.71 is: 10,867.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,247.64 : 19,661.73 = 7,874.71 : x
  2. Step 2: Convert to fraction form
    14,247.64/19,661.73 = 7,874.71/x
  3. Step 3: Cross multiply
    14,247.64x = 19,661.73 × 7,874.71
  4. Step 4: Simplify right side
    14,247.64x = 154,830,421.85
  5. Step 5: Solve for x
    x = 154,830,421.85/14,247.64
  6. Step 6: Final answer
    x = 10,867.09

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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.