Home / 19,880.10-29,808.81-8,179.38

Finding the Fourth Proportional to 19,880.10, 29,808.81 and 8,179.38

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Solution

The fourth proportional to 19,880.10, 29,808.81 and 8,179.38 is: 12,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,880.10 : 29,808.81 = 8,179.38 : x
  2. Step 2: Convert to fraction form
    19,880.10/29,808.81 = 8,179.38/x
  3. Step 3: Cross multiply
    19,880.10x = 29,808.81 × 8,179.38
  4. Step 4: Simplify right side
    19,880.10x = 243,817,584.34
  5. Step 5: Solve for x
    x = 243,817,584.34/19,880.10
  6. Step 6: Final answer
    x = 12,264.40

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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.