Home / 31,416.25-43,354.43-17,991.95

Finding the Fourth Proportional to 31,416.25, 43,354.43 and 17,991.95

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Solution

The fourth proportional to 31,416.25, 43,354.43 and 17,991.95 is: 24,828.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,416.25 : 43,354.43 = 17,991.95 : x
  2. Step 2: Convert to fraction form
    31,416.25/43,354.43 = 17,991.95/x
  3. Step 3: Cross multiply
    31,416.25x = 43,354.43 × 17,991.95
  4. Step 4: Simplify right side
    31,416.25x = 780,030,430.11
  5. Step 5: Solve for x
    x = 780,030,430.11/31,416.25
  6. Step 6: Final answer
    x = 24,828.88

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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.