Home / 14,143.21-21,217.88-4,781.50

Finding the Fourth Proportional to 14,143.21, 21,217.88 and 4,781.50

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Solution

The fourth proportional to 14,143.21, 21,217.88 and 4,781.50 is: 7,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,143.21 : 21,217.88 = 4,781.50 : x
  2. Step 2: Convert to fraction form
    14,143.21/21,217.88 = 4,781.50/x
  3. Step 3: Cross multiply
    14,143.21x = 21,217.88 × 4,781.50
  4. Step 4: Simplify right side
    14,143.21x = 101,453,252.13
  5. Step 5: Solve for x
    x = 101,453,252.13/14,143.21
  6. Step 6: Final answer
    x = 7,173.28

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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.