Home / 19,254.45-28,869.18-12,660.66

Finding the Fourth Proportional to 19,254.45, 28,869.18 and 12,660.66

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Solution

The fourth proportional to 19,254.45, 28,869.18 and 12,660.66 is: 18,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254.45 : 28,869.18 = 12,660.66 : x
  2. Step 2: Convert to fraction form
    19,254.45/28,869.18 = 12,660.66/x
  3. Step 3: Cross multiply
    19,254.45x = 28,869.18 × 12,660.66
  4. Step 4: Simplify right side
    19,254.45x = 365,502,872.46
  5. Step 5: Solve for x
    x = 365,502,872.46/19,254.45
  6. Step 6: Final answer
    x = 18,982.77

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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.