Home / 21,977.63-30,327.33-12,418.35

Finding the Fourth Proportional to 21,977.63, 30,327.33 and 12,418.35

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Solution

The fourth proportional to 21,977.63, 30,327.33 and 12,418.35 is: 17,136.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.63 : 30,327.33 = 12,418.35 : x
  2. Step 2: Convert to fraction form
    21,977.63/30,327.33 = 12,418.35/x
  3. Step 3: Cross multiply
    21,977.63x = 30,327.33 × 12,418.35
  4. Step 4: Simplify right side
    21,977.63x = 376,615,432.08
  5. Step 5: Solve for x
    x = 376,615,432.08/21,977.63
  6. Step 6: Final answer
    x = 17,136.30

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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.