Home / 23,051.55-31,812.84-12,981.09

Finding the Fourth Proportional to 23,051.55, 31,812.84 and 12,981.09

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Solution

The fourth proportional to 23,051.55, 31,812.84 and 12,981.09 is: 17,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,051.55 : 31,812.84 = 12,981.09 : x
  2. Step 2: Convert to fraction form
    23,051.55/31,812.84 = 12,981.09/x
  3. Step 3: Cross multiply
    23,051.55x = 31,812.84 × 12,981.09
  4. Step 4: Simplify right side
    23,051.55x = 412,965,339.20
  5. Step 5: Solve for x
    x = 412,965,339.20/23,051.55
  6. Step 6: Final answer
    x = 17,914.86

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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.