Home / 31,999.51-47,894.69-28,930.21

Finding the Fourth Proportional to 31,999.51, 47,894.69 and 28,930.21

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Solution

The fourth proportional to 31,999.51, 47,894.69 and 28,930.21 is: 43,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,999.51 : 47,894.69 = 28,930.21 : x
  2. Step 2: Convert to fraction form
    31,999.51/47,894.69 = 28,930.21/x
  3. Step 3: Cross multiply
    31,999.51x = 47,894.69 × 28,930.21
  4. Step 4: Simplify right side
    31,999.51x = 1,385,603,661.58
  5. Step 5: Solve for x
    x = 1,385,603,661.58/31,999.51
  6. Step 6: Final answer
    x = 43,300.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.