Home / 23,138.09-31,900.73-18,884.78

Finding the Fourth Proportional to 23,138.09, 31,900.73 and 18,884.78

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Solution

The fourth proportional to 23,138.09, 31,900.73 and 18,884.78 is: 26,036.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.09 : 31,900.73 = 18,884.78 : x
  2. Step 2: Convert to fraction form
    23,138.09/31,900.73 = 18,884.78/x
  3. Step 3: Cross multiply
    23,138.09x = 31,900.73 × 18,884.78
  4. Step 4: Simplify right side
    23,138.09x = 602,438,013.96
  5. Step 5: Solve for x
    x = 602,438,013.96/23,138.09
  6. Step 6: Final answer
    x = 26,036.64

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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.