Home / 23,128.88-31,917.85-12,518.58

Finding the Fourth Proportional to 23,128.88, 31,917.85 and 12,518.58

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Solution

The fourth proportional to 23,128.88, 31,917.85 and 12,518.58 is: 17,275.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,128.88 : 31,917.85 = 12,518.58 : x
  2. Step 2: Convert to fraction form
    23,128.88/31,917.85 = 12,518.58/x
  3. Step 3: Cross multiply
    23,128.88x = 31,917.85 × 12,518.58
  4. Step 4: Simplify right side
    23,128.88x = 399,566,247.05
  5. Step 5: Solve for x
    x = 399,566,247.05/23,128.88
  6. Step 6: Final answer
    x = 17,275.65

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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.