Home / 15,604.85-21,529.43-8,885.72

Finding the Fourth Proportional to 15,604.85, 21,529.43 and 8,885.72

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Solution

The fourth proportional to 15,604.85, 21,529.43 and 8,885.72 is: 12,259.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,604.85 : 21,529.43 = 8,885.72 : x
  2. Step 2: Convert to fraction form
    15,604.85/21,529.43 = 8,885.72/x
  3. Step 3: Cross multiply
    15,604.85x = 21,529.43 × 8,885.72
  4. Step 4: Simplify right side
    15,604.85x = 191,304,334.66
  5. Step 5: Solve for x
    x = 191,304,334.66/15,604.85
  6. Step 6: Final answer
    x = 12,259.29

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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.