Home / 30,816.57-46,256.76-18,978.87

Finding the Fourth Proportional to 30,816.57, 46,256.76 and 18,978.87

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Solution

The fourth proportional to 30,816.57, 46,256.76 and 18,978.87 is: 28,487.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,816.57 : 46,256.76 = 18,978.87 : x
  2. Step 2: Convert to fraction form
    30,816.57/46,256.76 = 18,978.87/x
  3. Step 3: Cross multiply
    30,816.57x = 46,256.76 × 18,978.87
  4. Step 4: Simplify right side
    30,816.57x = 877,901,034.66
  5. Step 5: Solve for x
    x = 877,901,034.66/30,816.57
  6. Step 6: Final answer
    x = 28,487.95

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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.