Home / 31,007.07-42,787.93-16,859.79

Finding the Fourth Proportional to 31,007.07, 42,787.93 and 16,859.79

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Solution

The fourth proportional to 31,007.07, 42,787.93 and 16,859.79 is: 23,265.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,007.07 : 42,787.93 = 16,859.79 : x
  2. Step 2: Convert to fraction form
    31,007.07/42,787.93 = 16,859.79/x
  3. Step 3: Cross multiply
    31,007.07x = 42,787.93 × 16,859.79
  4. Step 4: Simplify right side
    31,007.07x = 721,395,514.33
  5. Step 5: Solve for x
    x = 721,395,514.33/31,007.07
  6. Step 6: Final answer
    x = 23,265.52

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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.