Home / 20,596.88-28,415.57-13,435.13

Finding the Fourth Proportional to 20,596.88, 28,415.57 and 13,435.13

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Solution

The fourth proportional to 20,596.88, 28,415.57 and 13,435.13 is: 18,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.88 : 28,415.57 = 13,435.13 : x
  2. Step 2: Convert to fraction form
    20,596.88/28,415.57 = 13,435.13/x
  3. Step 3: Cross multiply
    20,596.88x = 28,415.57 × 13,435.13
  4. Step 4: Simplify right side
    20,596.88x = 381,766,667.72
  5. Step 5: Solve for x
    x = 381,766,667.72/20,596.88
  6. Step 6: Final answer
    x = 18,535.17

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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.