Home / 14,381.76-21,568.38-6,479.72

Finding the Fourth Proportional to 14,381.76, 21,568.38 and 6,479.72

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Solution

The fourth proportional to 14,381.76, 21,568.38 and 6,479.72 is: 9,717.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,381.76 : 21,568.38 = 6,479.72 : x
  2. Step 2: Convert to fraction form
    14,381.76/21,568.38 = 6,479.72/x
  3. Step 3: Cross multiply
    14,381.76x = 21,568.38 × 6,479.72
  4. Step 4: Simplify right side
    14,381.76x = 139,757,063.25
  5. Step 5: Solve for x
    x = 139,757,063.25/14,381.76
  6. Step 6: Final answer
    x = 9,717.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.