Home / 21,476.66-29,626.34-12,520.89

Finding the Fourth Proportional to 21,476.66, 29,626.34 and 12,520.89

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Solution

The fourth proportional to 21,476.66, 29,626.34 and 12,520.89 is: 17,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,476.66 : 29,626.34 = 12,520.89 : x
  2. Step 2: Convert to fraction form
    21,476.66/29,626.34 = 12,520.89/x
  3. Step 3: Cross multiply
    21,476.66x = 29,626.34 × 12,520.89
  4. Step 4: Simplify right side
    21,476.66x = 370,948,144.24
  5. Step 5: Solve for x
    x = 370,948,144.24/21,476.66
  6. Step 6: Final answer
    x = 17,272.15

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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.