Home / 31,159.44-43,017.78-20,579.88

Finding the Fourth Proportional to 31,159.44, 43,017.78 and 20,579.88

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Solution

The fourth proportional to 31,159.44, 43,017.78 and 20,579.88 is: 28,411.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,159.44 : 43,017.78 = 20,579.88 : x
  2. Step 2: Convert to fraction form
    31,159.44/43,017.78 = 20,579.88/x
  3. Step 3: Cross multiply
    31,159.44x = 43,017.78 × 20,579.88
  4. Step 4: Simplify right side
    31,159.44x = 885,300,750.27
  5. Step 5: Solve for x
    x = 885,300,750.27/31,159.44
  6. Step 6: Final answer
    x = 28,411.96

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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.