Home / 30,720.20-46,098.23-12,949.78

Finding the Fourth Proportional to 30,720.20, 46,098.23 and 12,949.78

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Solution

The fourth proportional to 30,720.20, 46,098.23 and 12,949.78 is: 19,432.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,720.20 : 46,098.23 = 12,949.78 : x
  2. Step 2: Convert to fraction form
    30,720.20/46,098.23 = 12,949.78/x
  3. Step 3: Cross multiply
    30,720.20x = 46,098.23 × 12,949.78
  4. Step 4: Simplify right side
    30,720.20x = 596,961,929.76
  5. Step 5: Solve for x
    x = 596,961,929.76/30,720.20
  6. Step 6: Final answer
    x = 19,432.23

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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.