Home / 19,880.67-29,809.65-8,179.95

Finding the Fourth Proportional to 19,880.67, 29,809.65 and 8,179.95

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Solution

The fourth proportional to 19,880.67, 29,809.65 and 8,179.95 is: 12,265.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.67 : 29,809.65 = 8,179.95 : x
  2. Step 2: Convert to fraction form
    19,880.67/29,809.65 = 8,179.95/x
  3. Step 3: Cross multiply
    19,880.67x = 29,809.65 × 8,179.95
  4. Step 4: Simplify right side
    19,880.67x = 243,841,446.52
  5. Step 5: Solve for x
    x = 243,841,446.52/19,880.67
  6. Step 6: Final answer
    x = 12,265.25

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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.