Home / 19,259.24-28,876.39-12,665.43

Finding the Fourth Proportional to 19,259.24, 28,876.39 and 12,665.43

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Solution

The fourth proportional to 19,259.24, 28,876.39 and 12,665.43 is: 18,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,259.24 : 28,876.39 = 12,665.43 : x
  2. Step 2: Convert to fraction form
    19,259.24/28,876.39 = 12,665.43/x
  3. Step 3: Cross multiply
    19,259.24x = 28,876.39 × 12,665.43
  4. Step 4: Simplify right side
    19,259.24x = 365,731,864.53
  5. Step 5: Solve for x
    x = 365,731,864.53/19,259.24
  6. Step 6: Final answer
    x = 18,989.95

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1.5x scale

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.