Home / 19,779.18-29,686.52-9,923.97

Finding the Fourth Proportional to 19,779.18, 29,686.52 and 9,923.97

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Solution

The fourth proportional to 19,779.18, 29,686.52 and 9,923.97 is: 14,894.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.18 : 29,686.52 = 9,923.97 : x
  2. Step 2: Convert to fraction form
    19,779.18/29,686.52 = 9,923.97/x
  3. Step 3: Cross multiply
    19,779.18x = 29,686.52 × 9,923.97
  4. Step 4: Simplify right side
    19,779.18x = 294,608,133.88
  5. Step 5: Solve for x
    x = 294,608,133.88/19,779.18
  6. Step 6: Final answer
    x = 14,894.86

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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.