Home / 31,780.56-43,857.48-17,440.80

Finding the Fourth Proportional to 31,780.56, 43,857.48 and 17,440.80

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Solution

The fourth proportional to 31,780.56, 43,857.48 and 17,440.80 is: 24,068.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.56 : 43,857.48 = 17,440.80 : x
  2. Step 2: Convert to fraction form
    31,780.56/43,857.48 = 17,440.80/x
  3. Step 3: Cross multiply
    31,780.56x = 43,857.48 × 17,440.80
  4. Step 4: Simplify right side
    31,780.56x = 764,909,537.18
  5. Step 5: Solve for x
    x = 764,909,537.18/31,780.56
  6. Step 6: Final answer
    x = 24,068.47

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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.