Home / 23,065.14-31,825.66-12,991.43

Finding the Fourth Proportional to 23,065.14, 31,825.66 and 12,991.43

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Solution

The fourth proportional to 23,065.14, 31,825.66 and 12,991.43 is: 17,925.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,065.14 : 31,825.66 = 12,991.43 : x
  2. Step 2: Convert to fraction form
    23,065.14/31,825.66 = 12,991.43/x
  3. Step 3: Cross multiply
    23,065.14x = 31,825.66 × 12,991.43
  4. Step 4: Simplify right side
    23,065.14x = 413,460,834.09
  5. Step 5: Solve for x
    x = 413,460,834.09/23,065.14
  6. Step 6: Final answer
    x = 17,925.79

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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.