Home / 14,279.68-21,416.64-5,515.84

Finding the Fourth Proportional to 14,279.68, 21,416.64 and 5,515.84

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Solution

The fourth proportional to 14,279.68, 21,416.64 and 5,515.84 is: 8,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.68 : 21,416.64 = 5,515.84 : x
  2. Step 2: Convert to fraction form
    14,279.68/21,416.64 = 5,515.84/x
  3. Step 3: Cross multiply
    14,279.68x = 21,416.64 × 5,515.84
  4. Step 4: Simplify right side
    14,279.68x = 118,130,759.58
  5. Step 5: Solve for x
    x = 118,130,759.58/14,279.68
  6. Step 6: Final answer
    x = 8,272.65

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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.