Home / 31,511.51-43,459.40-18,933.83

Finding the Fourth Proportional to 31,511.51, 43,459.40 and 18,933.83

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Solution

The fourth proportional to 31,511.51, 43,459.40 and 18,933.83 is: 26,112.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,511.51 : 43,459.40 = 18,933.83 : x
  2. Step 2: Convert to fraction form
    31,511.51/43,459.40 = 18,933.83/x
  3. Step 3: Cross multiply
    31,511.51x = 43,459.40 × 18,933.83
  4. Step 4: Simplify right side
    31,511.51x = 822,852,891.50
  5. Step 5: Solve for x
    x = 822,852,891.50/31,511.51
  6. Step 6: Final answer
    x = 26,112.77

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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.