Home / 31,380.84-43,287.48-18,798.30

Finding the Fourth Proportional to 31,380.84, 43,287.48 and 18,798.30

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Solution

The fourth proportional to 31,380.84, 43,287.48 and 18,798.30 is: 25,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.84 : 43,287.48 = 18,798.30 : x
  2. Step 2: Convert to fraction form
    31,380.84/43,287.48 = 18,798.30/x
  3. Step 3: Cross multiply
    31,380.84x = 43,287.48 × 18,798.30
  4. Step 4: Simplify right side
    31,380.84x = 813,731,035.28
  5. Step 5: Solve for x
    x = 813,731,035.28/31,380.84
  6. Step 6: Final answer
    x = 25,930.82

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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.