Home / 20,270.72-30,409.28-8,584

Finding the Fourth Proportional to 20,270.72, 30,409.28 and 8,584

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Solution

The fourth proportional to 20,270.72, 30,409.28 and 8,584 is: 12,877.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.72 : 30,409.28 = 8,584 : x
  2. Step 2: Convert to fraction form
    20,270.72/30,409.28 = 8,584/x
  3. Step 3: Cross multiply
    20,270.72x = 30,409.28 × 8,584
  4. Step 4: Simplify right side
    20,270.72x = 261,033,259.52
  5. Step 5: Solve for x
    x = 261,033,259.52/20,270.72
  6. Step 6: Final answer
    x = 12,877.36

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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.