Home / 28,633.18-39,511.80-15,885.82

Finding the Fourth Proportional to 28,633.18, 39,511.80 and 15,885.82

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Solution

The fourth proportional to 28,633.18, 39,511.80 and 15,885.82 is: 21,921.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,633.18 : 39,511.80 = 15,885.82 : x
  2. Step 2: Convert to fraction form
    28,633.18/39,511.80 = 15,885.82/x
  3. Step 3: Cross multiply
    28,633.18x = 39,511.80 × 15,885.82
  4. Step 4: Simplify right side
    28,633.18x = 627,677,342.68
  5. Step 5: Solve for x
    x = 627,677,342.68/28,633.18
  6. Step 6: Final answer
    x = 21,921.33

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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.