Home / 31,845.48-43,966.44-20,518.98

Finding the Fourth Proportional to 31,845.48, 43,966.44 and 20,518.98

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Solution

The fourth proportional to 31,845.48, 43,966.44 and 20,518.98 is: 28,328.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.48 : 43,966.44 = 20,518.98 : x
  2. Step 2: Convert to fraction form
    31,845.48/43,966.44 = 20,518.98/x
  3. Step 3: Cross multiply
    31,845.48x = 43,966.44 × 20,518.98
  4. Step 4: Simplify right side
    31,845.48x = 902,146,503.03
  5. Step 5: Solve for x
    x = 902,146,503.03/31,845.48
  6. Step 6: Final answer
    x = 28,328.87

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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.