Home / 13,280.72-19,920.36-4,046

Finding the Fourth Proportional to 13,280.72, 19,920.36 and 4,046

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Solution

The fourth proportional to 13,280.72, 19,920.36 and 4,046 is: 6,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,280.72 : 19,920.36 = 4,046 : x
  2. Step 2: Convert to fraction form
    13,280.72/19,920.36 = 4,046/x
  3. Step 3: Cross multiply
    13,280.72x = 19,920.36 × 4,046
  4. Step 4: Simplify right side
    13,280.72x = 80,597,776.56
  5. Step 5: Solve for x
    x = 80,597,776.56/13,280.72
  6. Step 6: Final answer
    x = 6,068.78

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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.