Home / 19,254.40-28,869.18-12,660.64

Finding the Fourth Proportional to 19,254.40, 28,869.18 and 12,660.64

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Solution

The fourth proportional to 19,254.40, 28,869.18 and 12,660.64 is: 18,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254.40 : 28,869.18 = 12,660.64 : x
  2. Step 2: Convert to fraction form
    19,254.40/28,869.18 = 12,660.64/x
  3. Step 3: Cross multiply
    19,254.40x = 28,869.18 × 12,660.64
  4. Step 4: Simplify right side
    19,254.40x = 365,502,295.08
  5. Step 5: Solve for x
    x = 365,502,295.08/19,254.40
  6. Step 6: Final answer
    x = 18,982.79

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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.