Home / 23,212.76-31,961.88-18,128.81

Finding the Fourth Proportional to 23,212.76, 31,961.88 and 18,128.81

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Solution

The fourth proportional to 23,212.76, 31,961.88 and 18,128.81 is: 24,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,212.76 : 31,961.88 = 18,128.81 : x
  2. Step 2: Convert to fraction form
    23,212.76/31,961.88 = 18,128.81/x
  3. Step 3: Cross multiply
    23,212.76x = 31,961.88 × 18,128.81
  4. Step 4: Simplify right side
    23,212.76x = 579,430,666.28
  5. Step 5: Solve for x
    x = 579,430,666.28/23,212.76
  6. Step 6: Final answer
    x = 24,961.74

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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.