Home / 19,813.92-29,779.20-12,932.16

Finding the Fourth Proportional to 19,813.92, 29,779.20 and 12,932.16

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Solution

The fourth proportional to 19,813.92, 29,779.20 and 12,932.16 is: 19,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,813.92 : 29,779.20 = 12,932.16 : x
  2. Step 2: Convert to fraction form
    19,813.92/29,779.20 = 12,932.16/x
  3. Step 3: Cross multiply
    19,813.92x = 29,779.20 × 12,932.16
  4. Step 4: Simplify right side
    19,813.92x = 385,109,379.07
  5. Step 5: Solve for x
    x = 385,109,379.07/19,813.92
  6. Step 6: Final answer
    x = 19,436.30

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1.5x scale

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.