Home / 21,860.84-30,169.32-12,432.44

Finding the Fourth Proportional to 21,860.84, 30,169.32 and 12,432.44

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Solution

The fourth proportional to 21,860.84, 30,169.32 and 12,432.44 is: 17,157.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,860.84 : 30,169.32 = 12,432.44 : x
  2. Step 2: Convert to fraction form
    21,860.84/30,169.32 = 12,432.44/x
  3. Step 3: Cross multiply
    21,860.84x = 30,169.32 × 12,432.44
  4. Step 4: Simplify right side
    21,860.84x = 375,078,260.74
  5. Step 5: Solve for x
    x = 375,078,260.74/21,860.84
  6. Step 6: Final answer
    x = 17,157.54

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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.