Home / 28,398.31-39,189.93-15,651.96

Finding the Fourth Proportional to 28,398.31, 39,189.93 and 15,651.96

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Solution

The fourth proportional to 28,398.31, 39,189.93 and 15,651.96 is: 21,599.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.31 : 39,189.93 = 15,651.96 : x
  2. Step 2: Convert to fraction form
    28,398.31/39,189.93 = 15,651.96/x
  3. Step 3: Cross multiply
    28,398.31x = 39,189.93 × 15,651.96
  4. Step 4: Simplify right side
    28,398.31x = 613,399,216.76
  5. Step 5: Solve for x
    x = 613,399,216.76/28,398.31
  6. Step 6: Final answer
    x = 21,599.85

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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.