Home / 45,580.88-68,381.24-13,991.12

Finding the Fourth Proportional to 45,580.88, 68,381.24 and 13,991.12

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Solution

The fourth proportional to 45,580.88, 68,381.24 and 13,991.12 is: 20,989.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,580.88 : 68,381.24 = 13,991.12 : x
  2. Step 2: Convert to fraction form
    45,580.88/68,381.24 = 13,991.12/x
  3. Step 3: Cross multiply
    45,580.88x = 68,381.24 × 13,991.12
  4. Step 4: Simplify right side
    45,580.88x = 956,730,134.59
  5. Step 5: Solve for x
    x = 956,730,134.59/45,580.88
  6. Step 6: Final answer
    x = 20,989.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.