Home / 28,822.70-43,124.70-18,981.20

Finding the Fourth Proportional to 28,822.70, 43,124.70 and 18,981.20

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Solution

The fourth proportional to 28,822.70, 43,124.70 and 18,981.20 is: 28,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,822.70 : 43,124.70 = 18,981.20 : x
  2. Step 2: Convert to fraction form
    28,822.70/43,124.70 = 18,981.20/x
  3. Step 3: Cross multiply
    28,822.70x = 43,124.70 × 18,981.20
  4. Step 4: Simplify right side
    28,822.70x = 818,558,555.64
  5. Step 5: Solve for x
    x = 818,558,555.64/28,822.70
  6. Step 6: Final answer
    x = 28,399.79

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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.