Home / 14,281.39-21,419.97-5,515.21

Finding the Fourth Proportional to 14,281.39, 21,419.97 and 5,515.21

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Solution

The fourth proportional to 14,281.39, 21,419.97 and 5,515.21 is: 8,272.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.39 : 21,419.97 = 5,515.21 : x
  2. Step 2: Convert to fraction form
    14,281.39/21,419.97 = 5,515.21/x
  3. Step 3: Cross multiply
    14,281.39x = 21,419.97 × 5,515.21
  4. Step 4: Simplify right side
    14,281.39x = 118,135,632.74
  5. Step 5: Solve for x
    x = 118,135,632.74/14,281.39
  6. Step 6: Final answer
    x = 8,272.00

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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.