Home / 19,256.80-28,885.20-9,415.30

Finding the Fourth Proportional to 19,256.80, 28,885.20 and 9,415.30

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Solution

The fourth proportional to 19,256.80, 28,885.20 and 9,415.30 is: 14,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,256.80 : 28,885.20 = 9,415.30 : x
  2. Step 2: Convert to fraction form
    19,256.80/28,885.20 = 9,415.30/x
  3. Step 3: Cross multiply
    19,256.80x = 28,885.20 × 9,415.30
  4. Step 4: Simplify right side
    19,256.80x = 271,962,823.56
  5. Step 5: Solve for x
    x = 271,962,823.56/19,256.80
  6. Step 6: Final answer
    x = 14,122.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.