Home / 21,433.55-29,577.97-12,002.45

Finding the Fourth Proportional to 21,433.55, 29,577.97 and 12,002.45

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Solution

The fourth proportional to 21,433.55, 29,577.97 and 12,002.45 is: 16,563.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.55 : 29,577.97 = 12,002.45 : x
  2. Step 2: Convert to fraction form
    21,433.55/29,577.97 = 12,002.45/x
  3. Step 3: Cross multiply
    21,433.55x = 29,577.97 × 12,002.45
  4. Step 4: Simplify right side
    21,433.55x = 355,008,106.03
  5. Step 5: Solve for x
    x = 355,008,106.03/21,433.55
  6. Step 6: Final answer
    x = 16,563.20

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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.