Home / 19,811.68-29,702.16-8,860

Finding the Fourth Proportional to 19,811.68, 29,702.16 and 8,860

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Solution

The fourth proportional to 19,811.68, 29,702.16 and 8,860 is: 13,283.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.68 : 29,702.16 = 8,860 : x
  2. Step 2: Convert to fraction form
    19,811.68/29,702.16 = 8,860/x
  3. Step 3: Cross multiply
    19,811.68x = 29,702.16 × 8,860
  4. Step 4: Simplify right side
    19,811.68x = 263,161,137.60
  5. Step 5: Solve for x
    x = 263,161,137.60/19,811.68
  6. Step 6: Final answer
    x = 13,283.13

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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.