Home / 19,779.75-29,649.12-12,367.19

Finding the Fourth Proportional to 19,779.75, 29,649.12 and 12,367.19

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Solution

The fourth proportional to 19,779.75, 29,649.12 and 12,367.19 is: 18,537.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.75 : 29,649.12 = 12,367.19 : x
  2. Step 2: Convert to fraction form
    19,779.75/29,649.12 = 12,367.19/x
  3. Step 3: Cross multiply
    19,779.75x = 29,649.12 × 12,367.19
  4. Step 4: Simplify right side
    19,779.75x = 366,676,300.37
  5. Step 5: Solve for x
    x = 366,676,300.37/19,779.75
  6. Step 6: Final answer
    x = 18,537.96

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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.