Home / 21,372.74-29,487.88-12,418.50

Finding the Fourth Proportional to 21,372.74, 29,487.88 and 12,418.50

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Solution

The fourth proportional to 21,372.74, 29,487.88 and 12,418.50 is: 17,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.74 : 29,487.88 = 12,418.50 : x
  2. Step 2: Convert to fraction form
    21,372.74/29,487.88 = 12,418.50/x
  3. Step 3: Cross multiply
    21,372.74x = 29,487.88 × 12,418.50
  4. Step 4: Simplify right side
    21,372.74x = 366,195,237.78
  5. Step 5: Solve for x
    x = 366,195,237.78/21,372.74
  6. Step 6: Final answer
    x = 17,133.75

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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.