Home / 19,438.65-29,122.77-8,917.47

Finding the Fourth Proportional to 19,438.65, 29,122.77 and 8,917.47

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Solution

The fourth proportional to 19,438.65, 29,122.77 and 8,917.47 is: 13,360.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,438.65 : 29,122.77 = 8,917.47 : x
  2. Step 2: Convert to fraction form
    19,438.65/29,122.77 = 8,917.47/x
  3. Step 3: Cross multiply
    19,438.65x = 29,122.77 × 8,917.47
  4. Step 4: Simplify right side
    19,438.65x = 259,701,427.79
  5. Step 5: Solve for x
    x = 259,701,427.79/19,438.65
  6. Step 6: Final answer
    x = 13,360.05

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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.