Home / 19,158.66-28,728.27-8,761.50

Finding the Fourth Proportional to 19,158.66, 28,728.27 and 8,761.50

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Solution

The fourth proportional to 19,158.66, 28,728.27 and 8,761.50 is: 13,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,158.66 : 28,728.27 = 8,761.50 : x
  2. Step 2: Convert to fraction form
    19,158.66/28,728.27 = 8,761.50/x
  3. Step 3: Cross multiply
    19,158.66x = 28,728.27 × 8,761.50
  4. Step 4: Simplify right side
    19,158.66x = 251,702,737.61
  5. Step 5: Solve for x
    x = 251,702,737.61/19,158.66
  6. Step 6: Final answer
    x = 13,137.80

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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.