Home / 28,511.11-42,734.80-11,859.81

Finding the Fourth Proportional to 28,511.11, 42,734.80 and 11,859.81

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Solution

The fourth proportional to 28,511.11, 42,734.80 and 11,859.81 is: 17,776.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511.11 : 42,734.80 = 11,859.81 : x
  2. Step 2: Convert to fraction form
    28,511.11/42,734.80 = 11,859.81/x
  3. Step 3: Cross multiply
    28,511.11x = 42,734.80 × 11,859.81
  4. Step 4: Simplify right side
    28,511.11x = 506,826,608.39
  5. Step 5: Solve for x
    x = 506,826,608.39/28,511.11
  6. Step 6: Final answer
    x = 17,776.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.