Home / 21,785.85-30,052.35-12,832.11

Finding the Fourth Proportional to 21,785.85, 30,052.35 and 12,832.11

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Solution

The fourth proportional to 21,785.85, 30,052.35 and 12,832.11 is: 17,701.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.85 : 30,052.35 = 12,832.11 : x
  2. Step 2: Convert to fraction form
    21,785.85/30,052.35 = 12,832.11/x
  3. Step 3: Cross multiply
    21,785.85x = 30,052.35 × 12,832.11
  4. Step 4: Simplify right side
    21,785.85x = 385,635,060.96
  5. Step 5: Solve for x
    x = 385,635,060.96/21,785.85
  6. Step 6: Final answer
    x = 17,701.17

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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.