Home / 23,051.72-31,810.15-12,979.85

Finding the Fourth Proportional to 23,051.72, 31,810.15 and 12,979.85

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Solution

The fourth proportional to 23,051.72, 31,810.15 and 12,979.85 is: 17,911.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,051.72 : 31,810.15 = 12,979.85 : x
  2. Step 2: Convert to fraction form
    23,051.72/31,810.15 = 12,979.85/x
  3. Step 3: Cross multiply
    23,051.72x = 31,810.15 × 12,979.85
  4. Step 4: Simplify right side
    23,051.72x = 412,890,832.65
  5. Step 5: Solve for x
    x = 412,890,832.65/23,051.72
  6. Step 6: Final answer
    x = 17,911.50

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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.