Home / 21,863.67-30,169.09-12,432.43

Finding the Fourth Proportional to 21,863.67, 30,169.09 and 12,432.43

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Solution

The fourth proportional to 21,863.67, 30,169.09 and 12,432.43 is: 17,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.67 : 30,169.09 = 12,432.43 : x
  2. Step 2: Convert to fraction form
    21,863.67/30,169.09 = 12,432.43/x
  3. Step 3: Cross multiply
    21,863.67x = 30,169.09 × 12,432.43
  4. Step 4: Simplify right side
    21,863.67x = 375,075,099.59
  5. Step 5: Solve for x
    x = 375,075,099.59/21,863.67
  6. Step 6: Final answer
    x = 17,155.18

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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.