Home / 22,999.90-31,740.77-12,928.31

Finding the Fourth Proportional to 22,999.90, 31,740.77 and 12,928.31

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Solution

The fourth proportional to 22,999.90, 31,740.77 and 12,928.31 is: 17,841.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,999.90 : 31,740.77 = 12,928.31 : x
  2. Step 2: Convert to fraction form
    22,999.90/31,740.77 = 12,928.31/x
  3. Step 3: Cross multiply
    22,999.90x = 31,740.77 × 12,928.31
  4. Step 4: Simplify right side
    22,999.90x = 410,354,449.56
  5. Step 5: Solve for x
    x = 410,354,449.56/22,999.90
  6. Step 6: Final answer
    x = 17,841.58

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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.