Home / 21,060.57-29,065.12-12,110.88

Finding the Fourth Proportional to 21,060.57, 29,065.12 and 12,110.88

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Solution

The fourth proportional to 21,060.57, 29,065.12 and 12,110.88 is: 16,713.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,060.57 : 29,065.12 = 12,110.88 : x
  2. Step 2: Convert to fraction form
    21,060.57/29,065.12 = 12,110.88/x
  3. Step 3: Cross multiply
    21,060.57x = 29,065.12 × 12,110.88
  4. Step 4: Simplify right side
    21,060.57x = 352,004,150.23
  5. Step 5: Solve for x
    x = 352,004,150.23/21,060.57
  6. Step 6: Final answer
    x = 16,713.89

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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.