Home / 15,289.72-21,099.54-8,575.36

Finding the Fourth Proportional to 15,289.72, 21,099.54 and 8,575.36

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Solution

The fourth proportional to 15,289.72, 21,099.54 and 8,575.36 is: 11,833.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.72 : 21,099.54 = 8,575.36 : x
  2. Step 2: Convert to fraction form
    15,289.72/21,099.54 = 8,575.36/x
  3. Step 3: Cross multiply
    15,289.72x = 21,099.54 × 8,575.36
  4. Step 4: Simplify right side
    15,289.72x = 180,936,151.33
  5. Step 5: Solve for x
    x = 180,936,151.33/15,289.72
  6. Step 6: Final answer
    x = 11,833.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.