Home / 28,399.73-39,193.88-15,655.17

Finding the Fourth Proportional to 28,399.73, 39,193.88 and 15,655.17

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Solution

The fourth proportional to 28,399.73, 39,193.88 and 15,655.17 is: 21,605.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.73 : 39,193.88 = 15,655.17 : x
  2. Step 2: Convert to fraction form
    28,399.73/39,193.88 = 15,655.17/x
  3. Step 3: Cross multiply
    28,399.73x = 39,193.88 × 15,655.17
  4. Step 4: Simplify right side
    28,399.73x = 613,586,923.06
  5. Step 5: Solve for x
    x = 613,586,923.06/28,399.73
  6. Step 6: Final answer
    x = 21,605.38

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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.