Home / 31,511.32-43,459.14-18,933.64

Finding the Fourth Proportional to 31,511.32, 43,459.14 and 18,933.64

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Solution

The fourth proportional to 31,511.32, 43,459.14 and 18,933.64 is: 26,112.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.32 : 43,459.14 = 18,933.64 : x
  2. Step 2: Convert to fraction form
    31,511.32/43,459.14 = 18,933.64/x
  3. Step 3: Cross multiply
    31,511.32x = 43,459.14 × 18,933.64
  4. Step 4: Simplify right side
    31,511.32x = 822,839,711.47
  5. Step 5: Solve for x
    x = 822,839,711.47/31,511.32
  6. Step 6: Final answer
    x = 26,112.51

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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.