Home / 19,479.18-29,197.71-7,779.54

Finding the Fourth Proportional to 19,479.18, 29,197.71 and 7,779.54

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Solution

The fourth proportional to 19,479.18, 29,197.71 and 7,779.54 is: 11,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.18 : 29,197.71 = 7,779.54 : x
  2. Step 2: Convert to fraction form
    19,479.18/29,197.71 = 7,779.54/x
  3. Step 3: Cross multiply
    19,479.18x = 29,197.71 × 7,779.54
  4. Step 4: Simplify right side
    19,479.18x = 227,144,752.85
  5. Step 5: Solve for x
    x = 227,144,752.85/19,479.18
  6. Step 6: Final answer
    x = 11,660.90

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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.