Home / 21,059.72-29,051.92-12,555.85

Finding the Fourth Proportional to 21,059.72, 29,051.92 and 12,555.85

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Solution

The fourth proportional to 21,059.72, 29,051.92 and 12,555.85 is: 17,320.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.72 : 29,051.92 = 12,555.85 : x
  2. Step 2: Convert to fraction form
    21,059.72/29,051.92 = 12,555.85/x
  3. Step 3: Cross multiply
    21,059.72x = 29,051.92 × 12,555.85
  4. Step 4: Simplify right side
    21,059.72x = 364,771,549.73
  5. Step 5: Solve for x
    x = 364,771,549.73/21,059.72
  6. Step 6: Final answer
    x = 17,320.82

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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.