Home / 20,408.81-28,113.89-17,374.15

Finding the Fourth Proportional to 20,408.81, 28,113.89 and 17,374.15

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Solution

The fourth proportional to 20,408.81, 28,113.89 and 17,374.15 is: 23,933.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.81 : 28,113.89 = 17,374.15 : x
  2. Step 2: Convert to fraction form
    20,408.81/28,113.89 = 17,374.15/x
  3. Step 3: Cross multiply
    20,408.81x = 28,113.89 × 17,374.15
  4. Step 4: Simplify right side
    20,408.81x = 488,454,732.07
  5. Step 5: Solve for x
    x = 488,454,732.07/20,408.81
  6. Step 6: Final answer
    x = 23,933.52

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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.